Social Vulnerability Index Recalculation
The Social Vulnerability Index Recalculation is based on the important work of the federal Centers for Disease Control. With the future of that index in doubt, the same federal datasets and methodologies were used to carry the index forward.
The most recent SVI uses the 2022 American Communities Survey as its base. This recalculation matches the 2022 baseline 100 percent. The 2022 methodologies form the basis of the updated calculations for subsequent ACS vintages. This platform will run updates on all new ACS releases.
Should the SVI be updated with changed methodologies, this platform will update to match, while preserving the 2022 methodologies for comparison purposes.
Rock County — Social Vulnerability Index
Unofficial CDC-method recomputation, 2020–2024 ACS 5-year
Rock County — Social Vulnerability Index by census tract
Where this is
Shading: Overall SVI Percentile
Lower (4 to 14)Lower-middle (16 to 38)Middle (38 to 50)Upper-middle (51 to 60)Higher (67 to 93)
Each unit is shaded by its Overall SVI Percentile 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.
Click a tract to see its overall percentile and theme scores.
Median tract: 44th percentile (among all U.S. tracts).
These tracts span the 4th percentile to the 93rd percentile. The width of that range is the internal disparity.
Widest spread across these tracts: Socioeconomic Status — this theme most separates the higher- and lower-ranked tracts here.
The SVI ranks each tract'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 — 1 tract (80th–100th percentile)
Tract 18.00 (pop. 4,511) — 93rd percentile — Well above the median CDC-based flag ≥ 90th percentile
Driven by Socioeconomic Status (well above), Household Characteristics (well above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (above).
Above the median — 8 tracts (60th–80th percentile)
Tract 1.00 (pop. 879) — 79th percentile — Above the median
Driven by Socioeconomic Status (well above) and Housing Type & Transportation (well above); below the median on Household Characteristics and Racial & Ethnic Minority Status.
Tract 16.00 (pop. 5,601) — 78th percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (well above) and Racial & Ethnic Minority Status (above); near the median on Housing Type & Transportation.
Tract 4.00 (pop. 3,936) — 69th percentile — Above the median
Driven by Household Characteristics (above) and Housing Type & Transportation (above); near the median on Socioeconomic Status; below the median on Racial & Ethnic Minority Status.
Tract 23.00 (pop. 2,152) — 69th percentile — Above the median
Driven by Household Characteristics (well above) and Housing Type & Transportation (above); near the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Tract 21.00 (pop. 3,229) — 67th percentile — Above the median
Driven by Household Characteristics (well above); near the median on Socioeconomic Status, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 20.00 (pop. 3,318) — 67th percentile — Above the median
Driven by Socioeconomic Status (well above); near the median on Household Characteristics and Racial & Ethnic Minority Status; below the median on Housing Type & Transportation.
Tract 25.00 (pop. 2,792) — 67th percentile — Above the median
Driven by Household Characteristics (well above) and Housing Type & Transportation (above); near the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Tract 10.00 (pop. 3,047) — 67th percentile — Above the median
Driven by Socioeconomic Status (above) and Housing Type & Transportation (well above); near the median on Household Characteristics; below the median on Racial & Ethnic Minority Status.
Near the median — 12 tracts (40th–60th percentile)
Tract 3.00 (pop. 2,719) — 60th percentile — Near the median
Driven by Socioeconomic Status (above) and Household Characteristics (above); near the median on Racial & Ethnic Minority Status; below the median on Housing Type & Transportation.
Tract 17.00 (pop. 4,928) — 60th percentile — Near the median
Driven by Socioeconomic Status (well above); near the median on Racial & Ethnic Minority Status; below the median on Household Characteristics and Housing Type & Transportation.
Tract 15.00 (pop. 2,316) — 59th percentile — Near the median
Driven by Socioeconomic Status (well above) and Housing Type & Transportation (above); near the median on Racial & Ethnic Minority Status; below the median on Household Characteristics.
Tract 7.00 (pop. 4,204) — 56th percentile — Near the median
Driven by Household Characteristics (above) and Housing Type & Transportation (above); near the median on Socioeconomic Status; below the median on Racial & Ethnic Minority Status.
Tract 13.06 (pop. 5,054) — 55th percentile — Near the median
Driven by Household Characteristics (above) and Housing Type & Transportation (above); near the median on Socioeconomic Status; below the median on Racial & Ethnic Minority Status.
Tract 33.00 (pop. 3,515) — 54th percentile — Near the median
Driven by Household Characteristics (above) and Housing Type & Transportation (above); near the median on Socioeconomic Status; below the median on Racial & Ethnic Minority Status.
Tract 30.01 (pop. 5,387) — 53rd percentile — Near the median
Driven by Household Characteristics (well above); near the median on Housing Type & Transportation; below the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Tract 26.01 (pop. 5,006) — 51st percentile — Near the median
Driven by Household Characteristics (above); near the median on Racial & Ethnic Minority Status and Housing Type & Transportation; below the median on Socioeconomic Status.
Tract 11.00 (pop. 4,904) — 50th percentile — Near the median
Driven by Household Characteristics (above); near the median on Housing Type & Transportation; below the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Tract 5.00 (pop. 4,582) — 45th percentile — Near the median
Driven by Household Characteristics (well above); near the median on Housing Type & Transportation; below the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Tract 32.00 (pop. 2,440) — 44th percentile — Near the median
Driven by Socioeconomic Status (above); below the median on Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 14.00 (pop. 5,760) — 44th percentile — Near the median
Driven by Housing Type & Transportation (above); near the median on Household Characteristics; below the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Below the median — 10 tracts (20th–40th percentile)
Tract 26.02 (pop. 4,530) — 40th percentile — Below the median
Driven by Housing Type & Transportation (above); near the median on Socioeconomic Status; below the median on Household Characteristics and Racial & Ethnic Minority Status.
Tract 28.00 (pop. 4,900) — 39th percentile — Below the median
Near the median on Household Characteristics and Housing Type & Transportation; below the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Tract 31.01 (pop. 2,732) — 38th percentile — Below the median
Near the median on Household Characteristics and Housing Type & Transportation; below the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Tract 2.00 (pop. 2,854) — 38th percentile — Below the median
Near the median on Socioeconomic Status and Housing Type & Transportation; below the median on Household Characteristics and Racial & Ethnic Minority Status.
Tract 8.00 (pop. 4,282) — 38th percentile — Below the median
Near the median on Socioeconomic Status and Household Characteristics; below the median on Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 6.00 (pop. 3,459) — 35th percentile — Below the median
Near the median on Socioeconomic Status and Household Characteristics; below the median on Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 12.01 (pop. 6,423) — 32nd percentile — Below the median
Near the median on Household Characteristics and Housing Type & Transportation; below the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Tract 19.00 (pop. 3,026) — 27th percentile — Below the median
Near the median on Household Characteristics; below the median on Socioeconomic Status, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 24.00 (pop. 3,680) — 25th percentile — Below the median
Driven by Household Characteristics (above); below the median on Socioeconomic Status, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 31.02 (pop. 5,009) — 25th percentile — Below the median
Near the median on Household Characteristics and Housing Type & Transportation; below the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Well below the median — 10 tracts (0th–20th percentile)
Tract 13.02 (pop. 6,342) — 18th percentile — Well below the median
Near the median on Housing Type & Transportation; below the median on Socioeconomic Status, Household Characteristics and Racial & Ethnic Minority Status.
Tract 29.02 (pop. 5,240) — 16th percentile — Well below the median
Near the median on Housing Type & Transportation; below the median on Socioeconomic Status, Household Characteristics and Racial & Ethnic Minority Status.
Tract 9.00 (pop. 3,258) — 14th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 13.05 (pop. 3,923) — 12th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 13.03 (pop. 4,683) — 11th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 27.00 (pop. 2,359) — 9th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 29.01 (pop. 3,866) — 8th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 12.02 (pop. 5,774) — 7th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 22.00 (pop. 2,012) — 5th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 30.02 (pop. 5,718) — 4th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
SVI = the CDC/ATSDR Social Vulnerability Index, recomputed by this platform from American Community Survey 2020–2024 5-year estimates using CDC's published method. Percentiles rank each tract against all U.S. tracts. "Vulnerability" is the name of CDC's index; the platform reports where a place ranks on it, and does not grade places or their residents.
Top-decile flags follow CDC's own convention (≥ 90th percentile) and are attributed as such; they are not part of an official CDC distribution.