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.
Brazoria County — Social Vulnerability Index
Unofficial CDC-method recomputation, 2020–2024 ACS 5-year
Brazoria County — Social Vulnerability Index by census tract
Where this is
Shading: Overall SVI Percentile
Lower (3 to 19)Lower-middle (22 to 45)Middle (46 to 61)Upper-middle (62 to 75)Higher (76 to 98)
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: 57th percentile (among all U.S. tracts).
These tracts span the 3rd percentile to the 98th percentile. The width of that range is the internal disparity.
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 — 9 tracts (80th–100th percentile)
Tract 6643.00 (pop. 5,473) — 98th 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 6639.00 (pop. 2,211) — 95th percentile — Well above the median CDC-based flag ≥ 90th percentile
Driven by Socioeconomic Status (above), Household Characteristics (well above), Racial & Ethnic Minority Status (well above) and Housing Type & Transportation (well above).
Tract 6614.00 (pop. 6,951) — 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 (well above).
Tract 6640.00 (pop. 3,574) — 90th percentile — Well above the median
Driven by Socioeconomic Status (above), Household Characteristics (well above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above).
Tract 6634.00 (pop. 8,762) — 88th percentile — Well above the median
Driven by Socioeconomic Status (well above), Household Characteristics (above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above).
Tract 6613.00 (pop. 3,050) — 88th percentile — Well above the median
Driven by Socioeconomic Status (well above), Household Characteristics (well above) and Racial & Ethnic Minority Status (above); near the median on Housing Type & Transportation.
Tract 6611.00 (pop. 2,906) — 88th percentile — Well 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 6612.00 (pop. 4,602) — 86th percentile — Well above the median
Driven by Socioeconomic Status (above), Household Characteristics (above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above).
Tract 6615.02 (pop. 5,099) — 85th percentile — Well above the median
Driven by Socioeconomic Status (well above), Household Characteristics (above) and Housing Type & Transportation (well above); near the median on Racial & Ethnic Minority Status.
Above the median — 24 tracts (60th–80th percentile)
Tract 6624.00 (pop. 5,774) — 80th percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (well above) and Housing Type & Transportation (well above); near the median on Racial & Ethnic Minority Status.
Tract 6623.00 (pop. 5,188) — 79th percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (well above) and Housing Type & Transportation (above); near the median on Racial & Ethnic Minority Status.
Tract 6642.00 (pop. 2,251) — 79th 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 6616.01 (pop. 7,514) — 79th percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (above).
Tract 6619.02 (pop. 13,694) — 78th percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (above), Racial & Ethnic Minority Status (well above) and Housing Type & Transportation (above).
Tract 6610.00 (pop. 10,648) — 78th percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (well above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (above).
Tract 6620.00 (pop. 5,943) — 76th 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 6644.00 (pop. 5,059) — 75th percentile — Above the median
Driven by Socioeconomic Status (well above), Household Characteristics (well above) and Racial & Ethnic Minority Status (above); below the median on Housing Type & Transportation.
Tract 6629.00 (pop. 4,922) — 74th percentile — Above the median
Driven by Socioeconomic Status (above) and Household Characteristics (above); near the median on Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 6621.00 (pop. 6,896) — 74th percentile — Above the median
Driven by Household Characteristics (well above) and Housing Type & Transportation (well above); near the median on Socioeconomic Status and Racial & Ethnic Minority Status.
Tract 6638.00 (pop. 6,013) — 73rd percentile — Above the median
Driven by Socioeconomic Status (well above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (above); below the median on Household Characteristics.
Tract 6626.00 (pop. 3,321) — 72nd 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.
Tract 6630.00 (pop. 5,407) — 72nd percentile — Above the median
Driven by Socioeconomic Status (above) and Housing Type & Transportation (well above); near the median on Racial & Ethnic Minority Status; below the median on Household Characteristics.
Tract 6603.01 (pop. 4,106) — 72nd percentile — Above the median
Driven by Socioeconomic Status (above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above); below the median on Household Characteristics.
Tract 6608.03 (pop. 3,338) — 68th percentile — Above the median
Driven by Socioeconomic Status (above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above); below the median on Household Characteristics.
Tract 6607.05 (pop. 5,448) — 66th percentile — Above the median
Driven by Socioeconomic Status (above) and Racial & Ethnic Minority Status (above); near the median on Household Characteristics and Housing Type & Transportation.
Tract 6609.01 (pop. 1,760) — 65th percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (above) and Racial & Ethnic Minority Status (well above); below the median on Housing Type & Transportation.
Tract 6635.00 (pop. 5,016) — 65th percentile — Above the median
Driven by Socioeconomic Status (above); near the median on Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 6616.02 (pop. 2,804) — 64th percentile — Above the median
Driven by Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above); near the median on Socioeconomic Status; below the median on Household Characteristics.
Tract 6637.00 (pop. 4,157) — 64th percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (well above) and Racial & Ethnic Minority Status (above); below the median on Housing Type & Transportation.
Tract 6622.00 (pop. 8,865) — 63rd percentile — Above the median
Driven by Household Characteristics (above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above); below the median on Socioeconomic Status.
Tract 6645.01 (pop. 4,506) — 62nd percentile — Above 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 6619.01 (pop. 9,374) — 61st percentile — Above the median
Driven by Socioeconomic Status (above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (above); below the median on Household Characteristics.
Tract 6609.02 (pop. 6,114) — 61st percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (well above) and Racial & Ethnic Minority Status (above); below the median on Housing Type & Transportation.
Near the median — 20 tracts (40th–60th percentile)
Tract 6617.00 (pop. 3,099) — 60th 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 6615.01 (pop. 4,240) — 60th percentile — Near the median
Driven by Socioeconomic Status (above) and Racial & Ethnic Minority Status (above); near the median on Household Characteristics and Housing Type & Transportation.
Tract 6628.00 (pop. 6,549) — 60th percentile — Near the median
Driven by Housing Type & Transportation (well above); near the median on Socioeconomic Status, Household Characteristics and Racial & Ethnic Minority Status.
Tract 6641.00 (pop. 5,196) — 60th percentile — Near the median
Driven by Socioeconomic Status (above), Household Characteristics (above) and Racial & Ethnic Minority Status (above); below the median on Housing Type & Transportation.
Tract 6627.00 (pop. 2,621) — 57th percentile — Near the median
Driven by Household Characteristics (well above) and Racial & Ethnic Minority Status (above); near the median on Socioeconomic Status; below the median on Housing Type & Transportation.
Tract 6604.01 (pop. 3,177) — 57th percentile — Near the median
Driven by Household Characteristics (well above) and Racial & Ethnic Minority Status (above); near the median on Housing Type & Transportation; below the median on Socioeconomic Status.
Tract 6632.00 (pop. 4,938) — 56th 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 6633.00 (pop. 2,213) — 56th percentile — Near the median
Driven by Socioeconomic Status (well above), Household Characteristics (above) and Racial & Ethnic Minority Status (above); below the median on Housing Type & Transportation.
Tract 6631.00 (pop. 7,094) — 51st 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 6607.03 (pop. 4,566) — 49th percentile — Near the median
Driven by Racial & Ethnic Minority Status (above) and Housing Type & Transportation (above); near the median on Household Characteristics; below the median on Socioeconomic Status.
Tract 6606.10 (pop. 4,935) — 49th percentile — Near the median
Driven by Racial & Ethnic Minority Status (well above) and Housing Type & Transportation (above); near the median on Household Characteristics; below the median on Socioeconomic Status.
Tract 6618.00 (pop. 12,512) — 49th 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.
Tract 6606.03 (pop. 3,216) — 48th percentile — Near the median
Driven by Racial & Ethnic Minority Status (well above) and Housing Type & Transportation (above); below the median on Socioeconomic Status and Household Characteristics.
Tract 6602.00 (pop. 5,636) — 46th percentile — Near the median
Driven by Racial & Ethnic Minority Status (above) and Housing Type & Transportation (above); below the median on Socioeconomic Status and Household Characteristics.
Tract 6606.13 (pop. 6,632) — 45th percentile — Near the median
Driven by Household Characteristics (above) and Racial & Ethnic Minority Status (well above); near the median on Housing Type & Transportation; below the median on Socioeconomic Status.
Tract 6606.16 (pop. 6,697) — 44th percentile — Near the median
Driven by Racial & Ethnic Minority Status (well above); near the median on Socioeconomic Status and Household Characteristics; below the median on Housing Type & Transportation.
Tract 6607.08 (pop. 10,202) — 42nd percentile — Near the median
Driven by Household Characteristics (above) and Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status and Housing Type & Transportation.
Tract 6607.07 (pop. 4,623) — 42nd percentile — Near the median
Driven by Socioeconomic Status (above) and Racial & Ethnic Minority Status (above); below the median on Household Characteristics and Housing Type & Transportation.
Tract 6625.00 (pop. 3,452) — 42nd percentile — Near the median
Near the median on Socioeconomic Status and Racial & Ethnic Minority Status; below the median on Household Characteristics and Housing Type & Transportation.
Tract 6608.04 (pop. 3,979) — 40th percentile — Near the median
Driven by Household Characteristics (above) and Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status and Housing Type & Transportation.
Below the median — 9 tracts (20th–40th percentile)
Tract 6605.04 (pop. 1,565) — 39th percentile — Below the median
Driven by Socioeconomic Status (above) and Racial & Ethnic Minority Status (above); below the median on Household Characteristics and Housing Type & Transportation.
Tract 6606.15 (pop. 6,737) — 35th percentile — Below the median
Driven by Racial & Ethnic Minority Status (well above); near the median on Socioeconomic Status; below the median on Household Characteristics and Housing Type & Transportation.
Tract 6608.05 (pop. 4,815) — 32nd percentile — Below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6606.06 (pop. 3,338) — 32nd 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 6605.02 (pop. 4,862) — 30th percentile — Below the median
Driven by Racial & Ethnic Minority Status (well above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6604.03 (pop. 4,947) — 28th percentile — Below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6605.01 (pop. 2,277) — 26th percentile — Below the median
Driven by Household Characteristics (above) and Racial & Ethnic Minority Status (well above); below the median on Socioeconomic Status and Housing Type & Transportation.
Tract 6605.03 (pop. 3,198) — 24th percentile — Below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6603.03 (pop. 3,901) — 22nd percentile — Below the median
Near the median on Racial & Ethnic Minority Status; below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Well below the median — 15 tracts (0th–20th percentile)
Tract 6606.09 (pop. 4,805) — 19th percentile — Well below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6607.06 (pop. 4,532) — 18th percentile — Well below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6601.00 (pop. 4,445) — 17th percentile — Well below the median
Near the median on Socioeconomic Status, Household Characteristics and Racial & Ethnic Minority Status; below the median on Housing Type & Transportation.
Tract 6608.06 (pop. 3,041) — 17th percentile — Well below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6606.05 (pop. 7,119) — 15th percentile — Well below the median
Driven by Household Characteristics (above) and Racial & Ethnic Minority Status (well above); below the median on Socioeconomic Status and Housing Type & Transportation.
Tract 6606.12 (pop. 3,795) — 14th percentile — Well below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6606.14 (pop. 5,443) — 12th percentile — Well below the median
Driven by Racial & Ethnic Minority Status (well above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6636.00 (pop. 5,284) — 11th percentile — Well below the median
Near the median on Racial & Ethnic Minority Status; below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6604.02 (pop. 5,027) — 10th percentile — Well below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6606.07 (pop. 4,252) — 9th percentile — Well below the median
Driven by Racial & Ethnic Minority Status (well above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6607.04 (pop. 5,292) — 7th percentile — Well below the median
Driven by Racial & Ethnic Minority Status (above); near the median on Household Characteristics; below the median on Socioeconomic Status and Housing Type & Transportation.
Tract 6606.04 (pop. 3,756) — 6th percentile — Well below the median
Driven by Racial & Ethnic Minority Status (well above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6606.11 (pop. 6,357) — 4th percentile — Well below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6603.02 (pop. 3,557) — 4th percentile — Well below the median
Near the median on Racial & Ethnic Minority Status; below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 6606.08 (pop. 2,587) — 3rd percentile — Well below the median
Near the median on Racial & Ethnic Minority Status; below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
1 tract unranked — no population or suppressed
These carry no percentile (zero-population or suppressed data, typically water and special-use tracts). They are excluded from the bands, median and range above, and are never shown as a low score.
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.