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.
Merrimack County — Social Vulnerability Index
Unofficial CDC-method recomputation, 2020–2024 ACS 5-year
Merrimack County — Social Vulnerability Index by census tract
Where this is
Shading: Overall SVI Percentile
Lower (3 to 26)Lower-middle (28 to 40)Middle (40 to 59)Upper-middle (63 to 84)Higher (89 to 97)
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: 53rd percentile (among tracts in NH).
These tracts span the 3rd percentile to the 97th percentile. The width of that range is the internal disparity.
Widest spread across these tracts: Racial & Ethnic Minority 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 — 10 tracts (80th–100th percentile)
Tract 329.00 (pop. 4,378) — 97th percentile — Well above the median CDC-based flag ≥ 90th percentile
Driven by Socioeconomic Status (well above), Household Characteristics (well above), Racial & Ethnic Minority Status (well above) and Housing Type & Transportation (well above).
Tract 31.00 (pop. 4,743) — 95th percentile — Well above the median CDC-based flag ≥ 90th percentile
Driven by Socioeconomic Status (well above), Household Characteristics (above), Racial & Ethnic Minority Status (well above) and Housing Type & Transportation (well above).
Tract 443.00 (pop. 5,087) — 93rd percentile — Well above the median CDC-based flag ≥ 90th percentile
Driven by Socioeconomic Status (above), Household Characteristics (well above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above).
Tract 441.00 (pop. 3,710) — 92nd 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).
Tract 322.00 (pop. 2,907) — 91st percentile — Well above the median CDC-based flag ≥ 90th percentile
Driven by Socioeconomic Status (well above), Household Characteristics (above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above).
Tract 380.00 (pop. 4,044) — 90th percentile — Well above the median CDC-based flag ≥ 90th percentile
Driven by Socioeconomic Status (well above) and Housing Type & Transportation (well above); near the median on Household Characteristics; below the median on Racial & Ethnic Minority Status.
Tract 324.00 (pop. 3,809) — 90th percentile — Well above the median
Driven by Socioeconomic Status (well above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above); near the median on Household Characteristics.
Tract 350.00 (pop. 4,105) — 89th percentile — Well above the median
Driven by Socioeconomic Status (well above), Household Characteristics (well above) and Housing Type & Transportation (above); below the median on Racial & Ethnic Minority Status.
Tract 326.00 (pop. 3,914) — 84th percentile — Well above the median
Driven by Socioeconomic Status (well above), Racial & Ethnic Minority Status (well above) and Housing Type & Transportation (above); near the median on Household Characteristics.
Tract 323.00 (pop. 1,909) — 80th percentile — Well above the median
Driven by Socioeconomic Status (well above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above); below the median on Household Characteristics.
Above the median — 6 tracts (60th–80th percentile)
Tract 325.00 (pop. 3,988) — 77th percentile — Above the median
Driven by Household Characteristics (well above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (above); near the median on Socioeconomic Status.
Tract 440.00 (pop. 4,971) — 72nd percentile — Above the median
Driven by Household Characteristics (above) and Housing Type & Transportation (well above); near the median on Socioeconomic Status; below the median on Racial & Ethnic Minority Status.
Tract 385.00 (pop. 5,186) — 67th percentile — Above the median
Driven by Housing Type & Transportation (well above); near the median on Socioeconomic Status and Household Characteristics; below the median on Racial & Ethnic Minority Status.
Tract 32.01 (pop. 5,255) — 66th percentile — Above the median
Driven by Socioeconomic Status (above) and Household Characteristics (well above); below the median on Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 430.02 (pop. 4,461) — 63rd percentile — Above the median
Driven by Socioeconomic Status (above) and Household Characteristics (well above); near the median on Housing Type & Transportation; below the median on Racial & Ethnic Minority Status.
Tract 327.01 (pop. 1,514) — 63rd percentile — Above the median
Driven by Socioeconomic Status (above) and Household Characteristics (well above); near the median on Racial & Ethnic Minority Status; below the median on Housing Type & Transportation.
Near the median — 8 tracts (40th–60th percentile)
Tract 415.00 (pop. 3,846) — 59th percentile — Near the median
Driven by Socioeconomic Status (above); near the median on Household Characteristics and Housing Type & Transportation; below the median on Racial & Ethnic Minority Status.
Tract 340.00 (pop. 4,939) — 58th percentile — Near the median
Driven by Housing Type & Transportation (well above); near the median on Household Characteristics; below the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Tract 430.01 (pop. 4,338) — 55th percentile — Near the median
Driven by Socioeconomic Status (above); near the median on Housing Type & Transportation; below the median on Household Characteristics and Racial & Ethnic Minority Status.
Tract 425.00 (pop. 3,744) — 53rd percentile — Near 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 30.06 (pop. 3,717) — 53rd percentile — Near the median
Driven by Housing Type & Transportation (above); near the median on Socioeconomic Status and Racial & Ethnic Minority Status; below the median on Household Characteristics.
Tract 30.01 (pop. 4,619) — 46th percentile — Near the median
Driven by Housing Type & Transportation (well above); near the median on Racial & Ethnic Minority Status; below the median on Socioeconomic Status and Household Characteristics.
Tract 327.06 (pop. 3,820) — 44th percentile — Near the median
Driven by Household Characteristics (well above); below the median on Socioeconomic Status, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 442.00 (pop. 6,721) — 40th percentile — Near the median
Driven by Racial & Ethnic Minority Status (above); near the median on Household Characteristics and Housing Type & Transportation; below the median on Socioeconomic Status.
Below the median — 10 tracts (20th–40th percentile)
Tract 321.00 (pop. 3,796) — 40th percentile — Below the median
Near the median on Household Characteristics and Racial & Ethnic Minority Status; below the median on Socioeconomic Status and Housing Type & Transportation.
Tract 400.00 (pop. 6,197) — 37th percentile — Below the median
Driven by Housing Type & Transportation (above); near the median on Racial & Ethnic Minority Status; below the median on Socioeconomic Status and Household Characteristics.
Tract 360.00 (pop. 5,692) — 33rd 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 330.00 (pop. 2,745) — 31st percentile — Below the median
Driven by Household Characteristics (well above); below the median on Socioeconomic Status, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 410.02 (pop. 2,460) — 30th percentile — Below the median
Driven by Racial & Ethnic Minority Status (above); near the median on Household Characteristics and Housing Type & Transportation; below the median on Socioeconomic Status.
Tract 300.00 (pop. 3,097) — 29th percentile — Below the median
Near the median on Racial & Ethnic Minority Status; below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 410.01 (pop. 1,973) — 29th percentile — Below the median
Driven by Household Characteristics (above); near the median on Racial & Ethnic Minority Status; below the median on Socioeconomic Status and Housing Type & Transportation.
Tract 405.01 (pop. 1,565) — 28th 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 310.01 (pop. 4,342) — 26th percentile — Below the median
Driven by Household Characteristics (above); below the median on Socioeconomic Status, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 370.00 (pop. 2,353) — 25th percentile — Below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Well below the median — 5 tracts (0th–20th percentile)
Tract 328.00 (pop. 5,543) — 17th percentile — Well below the median
Driven by Household Characteristics (above); near the median on Socioeconomic Status; below the median on Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 405.02 (pop. 4,266) — 16th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 32.02 (pop. 2,183) — 13th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 390.00 (pop. 6,037) — 11th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 310.02 (pop. 3,993) — 3rd 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 tracts in NH. "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.