About this index & how it's been checked

The Aging Vulnerability Index (AVI) is this platform's own construction, modeled on the CDC/ATSDR Social Vulnerability Index methodology but not a CDC product and not independently validated. It combines Census ACS data on the population 65 and older — demographic aging pressure, economic precarity, health/disability/isolation, and housing/transportation burden — into a single percentile ranking of U.S. counties. The underlying inputs are official Census data; the index construction and weighting are this platform's own.

Reference-county check

A face-validity check against real counties with well-documented age profiles — the same method used to calibrate this platform's seasonal-community threshold. Higher percentile = more aging-vulnerable.

  • ✓ Sumter County, FL — 79.8th percentile (expected HIGH, The Villages — often cited as the oldest-median-age U.S. county)
  • ✓ Charlotte County, FL — 90.8th percentile (expected HIGH, Retirement destination)
  • ✓ Citrus County, FL — 88.1th percentile (expected HIGH, Retirement destination)
  • ✓ Highlands County, FL — 95.9th percentile (expected HIGH, Retirement destination)
  • ✓ Brazos County, TX — 17.0th percentile (expected LOW, Texas A&M)
  • ✓ Story County, IA — 8.9th percentile (expected LOW, Iowa State)
  • ✓ Whitman County, WA — 10.3th percentile (expected LOW, Washington State University)
  • ✓ Tompkins County, NY — 7.6th percentile (expected LOW, Cornell)

Highest / lowest AVI by county population

Under 50,000

Highest
  1. Catron County, NM — 100.0th pctile (pop. 3,743)
  2. De Baca County, NM — 99.9th pctile (pop. 1,576)
  3. Ozark County, MO — 99.8th pctile (pop. 8,873)
  4. Scott County, VA — 99.6th pctile (pop. 21,479)
  5. Harney County, OR — 99.6th pctile (pop. 7,499)
Lowest
  1. Martin County, TX — 0.0th pctile (pop. 5,218)
  2. Jim Hogg County, TX — 0.1th pctile (pop. 4,727)
  3. Haskell County, KS — 0.1th pctile (pop. 3,641)
  4. Hanson County, SD — 0.1th pctile (pop. 3,472)
  5. Trousdale County, TN — 0.2th pctile (pop. 11,957)

50,000-99,999

Highest
  1. Nye County, NV — 96.7th pctile (pop. 54,344)
  2. Gila County, AZ — 96.7th pctile (pop. 53,795)
  3. Raleigh County, WV — 96.0th pctile (pop. 73,195)
  4. Wilkes County, NC — 95.6th pctile (pop. 65,935)
  5. Pittsylvania County, VA — 94.0th pctile (pop. 59,856)
Lowest
  1. Oldham County, KY — 0.0th pctile (pop. 69,257)
  2. Eagle County, CO — 0.2th pctile (pop. 55,135)
  3. Lincoln County, SD — 0.5th pctile (pop. 70,638)
  4. Johnson County, MO — 0.9th pctile (pop. 54,732)
  5. Lafayette County, MS — 1.3th pctile (pop. 58,327)

100,000-299,999

Highest
  1. Highlands County, FL — 95.9th pctile (pop. 105,702)
  2. Mohave County, AZ — 93.9th pctile (pop. 220,517)
  3. Douglas County, OR — 93.0th pctile (pop. 112,072)
  4. Charlotte County, FL — 90.8th pctile (pop. 201,064)
  5. Indian River County, FL — 90.3th pctile (pop. 166,936)
Lowest
  1. Union County, NC — 0.8th pctile (pop. 250,958)
  2. Scott County, MN — 1.1th pctile (pop. 154,557)
  3. Williamson County, TN — 1.2th pctile (pop. 260,351)
  4. St. Mary's County, MD — 1.3th pctile (pop. 115,126)
  5. Dallas County, IA — 1.5th pctile (pop. 107,968)

300,000 and higher

Highest
  1. Pinellas County, FL — 90.1th pctile (pop. 963,481)
  2. Collier County, FL — 89.9th pctile (pop. 398,291)
  3. Marion County, FL — 87.1th pctile (pop. 400,078)
  4. Lee County, FL — 86.1th pctile (pop. 817,666)
  5. Palm Beach County, FL — 85.0th pctile (pop. 1,533,806)
Lowest
  1. Hamilton County, IN — 0.6th pctile (pop. 365,056)
  2. Prince William Count, VA — 2.1th pctile (pop. 488,880)
  3. Davis County, UT — 2.1th pctile (pop. 370,924)
  4. Douglas County, CO — 2.2th pctile (pop. 377,150)
  5. Loudoun County, VA — 2.4th pctile (pop. 432,998)
Compare
NationallyWithin its state

WI — Aging Vulnerability Index

Candidate index, not validated against ground truth — 2020–2024 ACS 5-year
WI — Aging Vulnerability Index by county
Adams County — 93 (Higher)Ashland County — 58 (Upper-middle)Barron County — 57 (Upper-middle)Bayfield County — 63 (Upper-middle)Brown County — 8 (Lower)Buffalo County — 81 (Higher)Burnett County — 89 (Higher)Calumet County — 2 (Lower)Chippewa County — 30 (Lower-middle)Clark County — 45 (Middle)Columbia County — 20 (Lower-middle)Crawford County — 67 (Upper-middle)Dane County — 7 (Lower)Dodge County — 22 (Lower-middle)Door County — 68 (Upper-middle)Douglas County — 43 (Middle)Dunn County — 5 (Lower)Eau Claire County — 27 (Lower-middle)Florence County — 57 (Upper-middle)Fond du Lac County — 14 (Lower)Forest County — 87 (Higher)Grant County — 21 (Lower-middle)Green County — 43 (Middle)Green Lake County — 85 (Higher)Iowa County — 18 (Lower)Iron County — 69 (Upper-middle)Jackson County — 40 (Middle)Jefferson County — 10 (Lower)Juneau County — 53 (Middle)Kenosha County — 12 (Lower)Kewaunee County — 63 (Upper-middle)La Crosse County — 30 (Lower-middle)Lafayette County — 89 (Higher)Langlade County — 71 (Upper-middle)Lincoln County — 52 (Middle)Manitowoc County — 36 (Middle)Marathon County — 27 (Lower-middle)Marinette County — 67 (Upper-middle)Menominee County — 27 (Lower-middle)Milwaukee County — 34 (Middle)Monroe County — 40 (Middle)Oconto County — 46 (Middle)Oneida County — 74 (Higher)Outagamie County — 4 (Lower)Ozaukee County — 32 (Middle)Pepin County — 46 (Middle)Pierce County — 3 (Lower)Polk County — 37 (Middle)Portage County — 6 (Lower)Price County — 91 (Higher)Racine County — 25 (Lower-middle)Richland County — 79 (Higher)Rock County — 24 (Lower-middle)Rusk County — 80 (Higher)St. Croix County — 4 (Lower)Sauk County — 32 (Lower-middle)Sawyer County — 83 (Higher)Shawano County — 54 (Upper-middle)Sheboygan County — 19 (Lower)Taylor County — 52 (Middle)Trempealeau County — 23 (Lower-middle)Vernon County — 73 (Higher)Vilas County — 85 (Higher)Walworth County — 25 (Lower-middle)Washburn County — 69 (Upper-middle)Washington County — 20 (Lower-middle)Waukesha County — 34 (Middle)Waupaca County — 54 (Upper-middle)Waushara County — 81 (Higher)Winnebago County — 19 (Lower)Wood County — 53 (Upper-middle)Marquette County — 88 (Higher)
Where this is
Shading: Aging Vulnerability Index
Lower (2 to 19)Lower-middle (20 to 32)Middle (32 to 53)Upper-middle (53 to 71)Higher (73 to 93)
Each unit is shaded by its Aging Vulnerability Index value and grouped into equal-count bands (quantiles) against the other units shown — lighter = lower, darker = higher. It ranks position among the units in view; it does not grade places, and the ranges shift with which units are shown.
The map is bounded to this parent geography — it shows the selected unit among its own siblings only, the same depth rule the drill-down uses. Shading ranks position on the measure among the units shown; it does not grade places.
Median county: 43rd percentile (among all U.S. counties).
These counties span the 2nd percentile to the 93rd percentile. The width of that range is the internal disparity.
Marquette County is marked below — Well above the median.
Well above the median12 (17%) ◀ Marquette County
Above the median11 (15%)
Near the median15 (21%)
Below the median18 (25%)
Well below the median16 (22%)
Widest spread across these counties: Housing & Transportation, 65+ — this theme most separates the higher- and lower-ranked counties here.
AVI ranks each county's position relative to a comparison set; it is not averaged into one number for the area, because percentiles do not average meaningfully. The distribution — median, range, and shape below — is the summary.

Marquette County — by county subdivision

Median county subdivision: 68th percentile (among all U.S. county subdivisions).
These county subdivisions span the 26th percentile to the 100th percentile. The width of that range is the internal disparity.
Well above the median5 (26%)
Above the median5 (26%)
Near the median7 (37%)
Below the median2 (11%)
Well below the median0 (0%)
Widest spread across these county subdivisions: Housing & Transportation, 65+ — this theme most separates the higher- and lower-ranked county subdivisions here.
AVI ranks each county subdivision's position relative to a comparison set; it is not averaged into one number for the area, because percentiles do not average meaningfully. The distribution — median, range, and shape below — is the summary.
Well above the median — 12 counties (80th–100th percentile)
Adams County — 93rd percentile — Well above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above), Economic Precarity, 65+ (above), Health, Disability & Isolation ‡ (above) and Social Isolation (above); below the median on Housing & Transportation, 65+.
‡ theme includes at least one flagged input.
Price County — 91st percentile — Well above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above) and Social Isolation (well above); near the median on Economic Precarity, 65+ and Housing & Transportation, 65+; below the median on Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Lafayette County — 89th percentile — Well above the median 1 of 12 flagged View by census tract →
Driven by Health, Disability & Isolation ‡ (well above), Housing & Transportation, 65+ (above) and Social Isolation (above); near the median on Demographic Aging Pressure; below the median on Economic Precarity, 65+.
‡ theme includes at least one flagged input.
Burnett County — 89th percentile — Well above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above) and Social Isolation (above); near the median on Economic Precarity, 65+ and Health, Disability & Isolation ‡; below the median on Housing & Transportation, 65+.
‡ theme includes at least one flagged input.
Marquette County — 88th percentile — Well above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above), Housing & Transportation, 65+ (above) and Social Isolation (above); near the median on Economic Precarity, 65+ and Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Forest County — 87th percentile — Well above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above), Economic Precarity, 65+ (above), Housing & Transportation, 65+ (well above) and Social Isolation (above); below the median on Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Green Lake County — 85th percentile — Well above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above), Economic Precarity, 65+ (above) and Housing & Transportation, 65+ (above); near the median on Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Vilas County — 85th percentile — Well above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above) and Health, Disability & Isolation ‡ (above); near the median on Economic Precarity, 65+ and Social Isolation; below the median on Housing & Transportation, 65+.
‡ theme includes at least one flagged input.
Sawyer County — 83rd percentile — Well above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above); near the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation; below the median on Housing & Transportation, 65+.
‡ theme includes at least one flagged input.
Buffalo County — 81st percentile — Well above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above) and Housing & Transportation, 65+ (above); near the median on Health, Disability & Isolation ‡ and Social Isolation; below the median on Economic Precarity, 65+.
‡ theme includes at least one flagged input.
Waushara County — 81st percentile — Well above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above) and Social Isolation (above); near the median on Health, Disability & Isolation ‡ and Housing & Transportation, 65+; below the median on Economic Precarity, 65+.
‡ theme includes at least one flagged input.
Rusk County — 80th percentile — Well above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above) and Social Isolation (above); near the median on Housing & Transportation, 65+; below the median on Economic Precarity, 65+ and Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Above the median — 11 counties (60th–80th percentile)
Richland County — 79th percentile — Above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above) and Social Isolation (above); near the median on Economic Precarity, 65+ and Housing & Transportation, 65+; below the median on Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Oneida County — 74th percentile — Above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above); near the median on Health, Disability & Isolation ‡; below the median on Economic Precarity, 65+, Housing & Transportation, 65+ and Social Isolation.
‡ theme includes at least one flagged input.
Vernon County — 73rd percentile — Above the median View by census tract →
Driven by Housing & Transportation, 65+ (well above); near the median on Demographic Aging Pressure, Economic Precarity, 65+ and Health, Disability & Isolation; below the median on Social Isolation.
Langlade County — 71st percentile — Above the median 2 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above) and Economic Precarity, 65+ (above); near the median on Social Isolation; below the median on Health, Disability & Isolation ‡ and Housing & Transportation, 65+ ‡.
‡ theme includes at least one flagged input.
Iron County — 69th percentile — Above the median 2 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above); near the median on Social Isolation; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Housing & Transportation, 65+ ‡.
‡ theme includes at least one flagged input.
Washburn County — 69th percentile — Above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above); near the median on Economic Precarity, 65+; below the median on Health, Disability & Isolation ‡, Housing & Transportation, 65+ and Social Isolation.
‡ theme includes at least one flagged input.
Door County — 68th percentile — Above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above); near the median on Health, Disability & Isolation ‡; below the median on Economic Precarity, 65+, Housing & Transportation, 65+ and Social Isolation.
‡ theme includes at least one flagged input.
Crawford County — 67th percentile — Above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above); near the median on Housing & Transportation, 65+ and Social Isolation; below the median on Economic Precarity, 65+ and Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Marinette County — 67th percentile — Above the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above); near the median on Housing & Transportation, 65+ and Social Isolation; below the median on Economic Precarity, 65+ and Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Kewaunee County — 63rd percentile — Above the median 3 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above) and Health, Disability & Isolation ‡ (above); near the median on Social Isolation; below the median on Economic Precarity, 65+ and Housing & Transportation, 65+ ‡.
‡ theme includes at least one flagged input.
Bayfield County — 63rd percentile — Above the median 2 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above); near the median on Health, Disability & Isolation ‡; below the median on Economic Precarity, 65+, Housing & Transportation, 65+ ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Near the median — 15 counties (40th–60th percentile)
Ashland County — 58th percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above) and Housing & Transportation, 65+ (above); near the median on Economic Precarity, 65+ and Social Isolation; below the median on Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Barron County — 57th percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above) and Housing & Transportation, 65+ (above); near the median on Social Isolation; below the median on Economic Precarity, 65+ and Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Florence County — 57th percentile — Near the median 4 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (well above) and Social Isolation (above); near the median on Health, Disability & Isolation ‡; below the median on Economic Precarity, 65+ and Housing & Transportation, 65+ ‡.
‡ theme includes at least one flagged input.
Shawano County — 54th percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above); near the median on Social Isolation; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Housing & Transportation, 65+.
‡ theme includes at least one flagged input.
Waupaca County — 54th percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above) and Housing & Transportation, 65+ (above); near the median on Economic Precarity, 65+ and Social Isolation; below the median on Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Wood County — 53rd percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above) and Housing & Transportation, 65+ (above); near the median on Social Isolation; below the median on Economic Precarity, 65+ and Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Juneau County — 53rd percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above); near the median on Economic Precarity, 65+ and Social Isolation; below the median on Health, Disability & Isolation ‡ and Housing & Transportation, 65+.
‡ theme includes at least one flagged input.
Taylor County — 52nd percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above); near the median on Housing & Transportation, 65+ and Social Isolation; below the median on Economic Precarity, 65+ and Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Lincoln County — 52nd percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above) and Social Isolation (above); below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Housing & Transportation, 65+.
‡ theme includes at least one flagged input.
Oconto County — 46th percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above); near the median on Health, Disability & Isolation ‡ and Housing & Transportation, 65+; below the median on Economic Precarity, 65+ and Social Isolation.
‡ theme includes at least one flagged input.
Pepin County — 46th percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above); below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡, Housing & Transportation, 65+ and Social Isolation.
‡ theme includes at least one flagged input.
Clark County — 45th percentile — Near the median View by census tract →
Driven by Housing & Transportation, 65+ (well above); near the median on Economic Precarity, 65+, Health, Disability & Isolation and Social Isolation; below the median on Demographic Aging Pressure.
Douglas County — 43rd percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (above); near the median on Demographic Aging Pressure and Health, Disability & Isolation ‡; below the median on Economic Precarity, 65+ and Social Isolation.
‡ theme includes at least one flagged input.
Green County — 43rd percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (well above); near the median on Demographic Aging Pressure and Social Isolation; below the median on Economic Precarity, 65+ and Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Monroe County — 40th percentile — Near the median 1 of 12 flagged View by census tract →
Driven by Health, Disability & Isolation ‡ (above) and Housing & Transportation, 65+ (well above); below the median on Demographic Aging Pressure, Economic Precarity, 65+ and Social Isolation.
‡ theme includes at least one flagged input.
Below the median — 18 counties (20th–40th percentile)
Jackson County — 40th percentile — Below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (well above); near the median on Demographic Aging Pressure and Social Isolation; below the median on Economic Precarity, 65+ and Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Polk County — 37th percentile — Below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (above); near the median on Demographic Aging Pressure; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Manitowoc County — 36th percentile — Below the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above); below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡, Housing & Transportation, 65+ and Social Isolation.
‡ theme includes at least one flagged input.
Waukesha County — 34th percentile — Below the median View by census tract →
Near the median on Demographic Aging Pressure, Health, Disability & Isolation and Housing & Transportation, 65+; below the median on Economic Precarity, 65+ and Social Isolation.
Milwaukee County — 34th percentile — Below the median View by census tract →
Driven by Economic Precarity, 65+ (above), Health, Disability & Isolation (above) and Housing & Transportation, 65+ (well above); below the median on Demographic Aging Pressure and Social Isolation.
Ozaukee County — 32nd percentile — Below the median 1 of 12 flagged View by census tract →
Driven by Demographic Aging Pressure (above); near the median on Housing & Transportation, 65+; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Sauk County — 32nd percentile — Below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (well above); near the median on Demographic Aging Pressure; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
La Crosse County — 30th percentile — Below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (well above); near the median on Economic Precarity, 65+; below the median on Demographic Aging Pressure, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Chippewa County — 30th percentile — Below the median 1 of 12 flagged View by census tract →
Near the median on Demographic Aging Pressure, Housing & Transportation, 65+ and Social Isolation; below the median on Economic Precarity, 65+ and Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Menominee County — 27th percentile — Below the median 4 of 12 flagged View by census tract →
Driven by Economic Precarity, 65+ (well above) and Health, Disability & Isolation ‡ (above); below the median on Demographic Aging Pressure, Housing & Transportation, 65+ ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Marathon County — 27th percentile — Below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (above); near the median on Demographic Aging Pressure; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Eau Claire County — 27th percentile — Below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (well above); below the median on Demographic Aging Pressure, Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Walworth County — 25th percentile — Below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (above); near the median on Demographic Aging Pressure; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Racine County — 25th percentile — Below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (well above); below the median on Demographic Aging Pressure, Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Rock County — 24th percentile — Below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (well above); below the median on Demographic Aging Pressure, Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Trempealeau County — 23rd percentile — Below the median 1 of 12 flagged View by census tract →
Near the median on Demographic Aging Pressure, Housing & Transportation, 65+ and Social Isolation; below the median on Economic Precarity, 65+ and Health, Disability & Isolation ‡.
‡ theme includes at least one flagged input.
Dodge County — 22nd percentile — Below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (above); near the median on Demographic Aging Pressure; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Grant County — 21st percentile — Below the median 1 of 12 flagged View by census tract →
Near the median on Economic Precarity, 65+ and Housing & Transportation, 65+; below the median on Demographic Aging Pressure, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Well below the median — 16 counties (0th–20th percentile)
Washington County — 20th percentile — Well below the median 1 of 12 flagged View by census tract →
Near the median on Demographic Aging Pressure and Housing & Transportation, 65+; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Columbia County — 20th percentile — Well below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (well above); near the median on Demographic Aging Pressure; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Winnebago County — 19th percentile — Well below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (above); near the median on Economic Precarity, 65+; below the median on Demographic Aging Pressure, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Sheboygan County — 19th percentile — Well below the median 1 of 12 flagged View by census tract →
Near the median on Demographic Aging Pressure; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡, Housing & Transportation, 65+ and Social Isolation.
‡ theme includes at least one flagged input.
Iowa County — 18th percentile — Well below the median 2 of 12 flagged View by census tract →
Near the median on Demographic Aging Pressure; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡, Housing & Transportation, 65+ ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Fond du Lac County — 14th percentile — Well below the median 1 of 12 flagged View by census tract →
Near the median on Demographic Aging Pressure and Housing & Transportation, 65+; below the median on Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Kenosha County — 12th percentile — Well below the median 1 of 12 flagged View by census tract →
Driven by Health, Disability & Isolation ‡ (above) and Housing & Transportation, 65+ (above); below the median on Demographic Aging Pressure, Economic Precarity, 65+ and Social Isolation.
‡ theme includes at least one flagged input.
Jefferson County — 10th percentile — Well below the median 1 of 12 flagged View by census tract →
Near the median on Housing & Transportation, 65+; below the median on Demographic Aging Pressure, Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Brown County — 8th percentile — Well below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (above); below the median on Demographic Aging Pressure, Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Dane County — 7th percentile — Well below the median View by census tract →
Driven by Housing & Transportation, 65+ (well above); near the median on Economic Precarity, 65+ and Health, Disability & Isolation; below the median on Demographic Aging Pressure and Social Isolation.
Portage County — 6th percentile — Well below the median 1 of 12 flagged View by census tract →
Below the median on Demographic Aging Pressure, Economic Precarity, 65+, Health, Disability & Isolation ‡, Housing & Transportation, 65+ and Social Isolation.
‡ theme includes at least one flagged input.
Dunn County — 5th percentile — Well below the median 1 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (above); below the median on Demographic Aging Pressure, Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Outagamie County — 4th percentile — Well below the median 1 of 12 flagged View by census tract →
Near the median on Housing & Transportation, 65+; below the median on Demographic Aging Pressure, Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
St. Croix County — 4th percentile — Well below the median 2 of 12 flagged View by census tract →
Driven by Housing & Transportation, 65+ (above); below the median on Demographic Aging Pressure, Economic Precarity, 65+, Health, Disability & Isolation ‡ and Social Isolation.
‡ theme includes at least one flagged input.
Pierce County — 3rd percentile — Well below the median 2 of 12 flagged View by census tract →
Below the median on Demographic Aging Pressure, Economic Precarity, 65+, Health, Disability & Isolation ‡, Housing & Transportation, 65+ and Social Isolation.
‡ theme includes at least one flagged input.
Calumet County — 2nd percentile — Well below the median View by census tract →
Below the median on Demographic Aging Pressure, Economic Precarity, 65+, Health, Disability & Isolation, Housing & Transportation, 65+ and Social Isolation.
AVI = a candidate Aging Vulnerability Index, computed by this platform from American Community Survey 2020–2024 5-year estimates, following the same method shape (percentile rank -> theme sum -> re-rank -> overall) as the CDC/ATSDR SVI this platform also recomputes — but AVI itself has no published ground truth to validate against. It is a first-cut, directional design. Percentiles rank each county against all U.S. counties.
Several of AVI's 12 input signals carry a documented high margin of error at this grain (most notably lack of health insurance, 65+) and are kept in the index with a flag rather than dropped, to preserve variable coverage. A county's flag count (shown per-county above) is a direct measure of how much its rank should be read as directional rather than precise.

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