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.

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Northwest Hills Plan — Social Vulnerability Index

Unofficial CDC-method recomputation, 2020–2024 ACS 5-year
Northwest Hills Plan — Social Vulnerability Index by census tract
Tract 2602.00 — 63 (Upper-middle)Tract 2611.00 — 20 (Lower-middle)Tract 2621.00 — 52 (Upper-middle)Tract 2632.00 — 11 (Lower)Tract 2651.00 — 25 (Middle)Tract 2661.00 — 37 (Middle)Tract 2671.00 — 43 (Upper-middle)Tract 2681.00 — 4 (Lower)Tract 2901.00 — 6 (Lower)Tract 2931.00 — 28 (Middle)Tract 2961.00 — 4 (Lower)Tract 2983.00 — 41 (Middle)Tract 2984.00 — 7 (Lower)Tract 3001.00 — 27 (Middle)Tract 3004.00 — 31 (Middle)Tract 3005.00 — 40 (Middle)Tract 3031.00 — 22 (Lower-middle)Tract 3061.00 — 16 (Lower-middle)Tract 3101.00 — 75 (Higher)Tract 3102.00 — 77 (Higher)Tract 3103.00 — 91 (Higher)Tract 3104.00 — 24 (Lower-middle)Tract 3105.00 — 66 (Higher)Tract 3106.01 — 30 (Middle)Tract 3106.02 — 59 (Upper-middle)Tract 3107.00 — 73 (Higher)Tract 3108.01 — 70 (Higher)Tract 3108.03 — 60 (Upper-middle)Tract 3108.04 — 74 (Higher)Tract 3201.01 — 77 (Higher)Tract 3201.02 — 58 (Upper-middle)Tract 3202.00 — 53 (Upper-middle)Tract 3301.00 — 15 (Lower-middle)Tract 4101.01 — 10 (Lower)Tract 4101.02 — 15 (Lower-middle)Tract 4256.01 — 14 (Lower)Tract 4256.02 — 14 (Lower-middle)
Where this is
Shading: Overall SVI Percentile
Lower (4 to 14)Lower-middle (14 to 24)Middle (25 to 41)Upper-middle (43 to 63)Higher (66 to 91)
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: 31st percentile (among tracts in CT).
These tracts span the 4th percentile to the 91st percentile. The width of that range is the internal disparity.
Well above the median1 (3%) · 1,768 people
Above the median9 (24%) · 28,383 people
Near the median6 (16%) · 22,475 people
Below the median9 (24%) · 21,946 people
Well below the median12 (32%) · 38,644 people
Widest spread across these tracts: Housing Type & Transportation — 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 3103.00 (pop. 1,768) — 91st 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 — 9 tracts (60th–80th percentile)
Tract 3102.00 (pop. 2,488) — 77th percentile — Above the median
Driven by Socioeconomic Status (well above), Household Characteristics (above) and Housing Type & Transportation (above); near the median on Racial & Ethnic Minority Status.
Tract 3201.01 (pop. 1,310) — 77th percentile — Above the median
Driven by Household Characteristics (above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above); near the median on Socioeconomic Status.
Tract 3101.00 (pop. 4,282) — 75th percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (above) and Housing Type & Transportation (above); near the median on Racial & Ethnic Minority Status.
Tract 3108.04 (pop. 2,896) — 74th percentile — Above the median
Driven by Socioeconomic Status (above) and Household Characteristics (well above); near the median on Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 3107.00 (pop. 4,936) — 73rd percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (above) and Housing Type & Transportation (well above); near the median on Racial & Ethnic Minority Status.
Tract 3108.01 (pop. 2,326) — 70th percentile — Above the median
Driven by Socioeconomic Status (well above) and Household Characteristics (above); near the median on Racial & Ethnic Minority Status; below the median on Housing Type & Transportation.
Tract 3105.00 (pop. 1,996) — 66th percentile — Above the median
Driven by Housing Type & Transportation (well above); near the median on Socioeconomic Status and Racial & Ethnic Minority Status; below the median on Household Characteristics.
Tract 2602.00 (pop. 3,221) — 63rd percentile — Above the median
Driven by Socioeconomic Status (above) and Housing Type & Transportation (above); near the median on Household Characteristics; below the median on Racial & Ethnic Minority Status.
Tract 3108.03 (pop. 4,928) — 60th percentile — Above the median
Driven by Socioeconomic Status (above); near the median on Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Near the median — 6 tracts (40th–60th percentile)
Tract 3106.02 (pop. 4,370) — 59th percentile — Near the median
Driven by Socioeconomic Status (above) and Housing Type & Transportation (above); below the median on Household Characteristics and Racial & Ethnic Minority Status.
Tract 3201.02 (pop. 4,696) — 58th percentile — Near the median
Driven by Socioeconomic Status (above) and Household Characteristics (above); near the median on Housing Type & Transportation; below the median on Racial & Ethnic Minority Status.
Tract 3202.00 (pop. 4,278) — 53rd 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 2621.00 (pop. 2,723) — 52nd 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 2671.00 (pop. 3,676) — 43rd percentile — Near the median
Near the median on Household Characteristics and Housing Type & Transportation; below the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Tract 2983.00 (pop. 2,732) — 41st percentile — Near the median
Driven by Household Characteristics (well above); below the median on Socioeconomic Status, Racial & Ethnic Minority Status and Housing Type & Transportation.
Below the median — 9 tracts (20th–40th percentile)
Tract 3005.00 (pop. 3,407) — 40th percentile — Below the median
Near the median on Socioeconomic Status; below the median on Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2661.00 (pop. 3,056) — 37th 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 3004.00 (pop. 2,117) — 31st percentile — Below the median
Driven by Housing Type & Transportation (above); below the median on Socioeconomic Status, Household Characteristics and Racial & Ethnic Minority Status.
Tract 3106.01 (pop. 3,161) — 30th percentile — Below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2931.00 (pop. 1,494) — 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 3001.00 (pop. 2,736) — 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 2651.00 (pop. 1,415) — 25th percentile — Below the median
Near the median on Socioeconomic Status; below the median on Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 3104.00 (pop. 2,396) — 24th percentile — Below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 3031.00 (pop. 2,164) — 22nd 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.
Well below the median — 12 tracts (0th–20th percentile)
Tract 2611.00 (pop. 4,224) — 20th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 3061.00 (pop. 6,675) — 16th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 3301.00 (pop. 1,840) — 15th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 4101.02 (pop. 4,388) — 15th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 4256.02 (pop. 1,175) — 14th percentile — Well below the median
Near the median on Socioeconomic Status; below the median on Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 4256.01 (pop. 1,723) — 14th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2632.00 (pop. 1,425) — 11th percentile — Well below the median
Near the median on Socioeconomic Status; below the median on Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 4101.01 (pop. 5,292) — 10th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2984.00 (pop. 2,843) — 7th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2901.00 (pop. 3,678) — 6th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2961.00 (pop. 3,196) — 4th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2681.00 (pop. 2,185) — 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 tracts in CT. "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.

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