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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Henrico County — Social Vulnerability Index

Unofficial CDC-method recomputation, 2020–2024 ACS 5-year
Henrico County — Social Vulnerability Index by census tract
Tract 2001.06 — 87 (Higher)Tract 2001.08 — 3 (Lower)Tract 2001.09 — 3 (Lower)Tract 2001.22 — 4 (Lower)Tract 2001.23 — 10 (Lower)Tract 2001.24 — 56 (Upper-middle)Tract 2001.25 — 66 (Upper-middle)Tract 2001.26 — 50 (Middle)Tract 2001.27 — 14 (Lower-middle)Tract 2001.31 — 81 (Higher)Tract 2001.32 — 73 (Higher)Tract 2001.33 — 22 (Lower-middle)Tract 2001.34 — 9 (Lower)Tract 2001.35 — 20 (Lower-middle)Tract 2001.36 — 86 (Higher)Tract 2001.37 — 33 (Middle)Tract 2001.38 — 32 (Middle)Tract 2001.39 — 35 (Middle)Tract 2001.40 — 29 (Lower-middle)Tract 2001.41 — 22 (Lower-middle)Tract 2001.42 — 5 (Lower)Tract 2001.43 — 2 (Lower)Tract 2001.44 — 30 (Middle)Tract 2001.45 — 0 (Lower)Tract 2001.46 — 3 (Lower)Tract 2001.47 — 9 (Lower)Tract 2001.48 — 2 (Lower)Tract 2001.49 — 12 (Lower)Tract 2001.50 — 5 (Lower)Tract 2001.51 — 26 (Lower-middle)Tract 2001.52 — 50 (Middle)Tract 2001.53 — 71 (Higher)Tract 2002.01 — 8 (Lower)Tract 2002.02 — 3 (Lower)Tract 2003.01 — 52 (Upper-middle)Tract 2003.02 — 13 (Lower-middle)Tract 2003.05 — 68 (Upper-middle)Tract 2004.04 — 20 (Lower-middle)Tract 2004.07 — 34 (Middle)Tract 2004.09 — 81 (Higher)Tract 2004.11 — 70 (Upper-middle)Tract 2004.12 — 65 (Upper-middle)Tract 2004.13 — 25 (Lower-middle)Tract 2004.14 — 33 (Middle)Tract 2004.15 — 15 (Lower-middle)Tract 2004.16 — 25 (Lower-middle)Tract 2004.17 — 73 (Higher)Tract 2004.18 — 71 (Higher)Tract 2005.01 — 48 (Middle)Tract 2005.02 — 26 (Lower-middle)Tract 2005.03 — 52 (Upper-middle)Tract 2006.00 — 37 (Middle)Tract 2007.00 — 85 (Higher)Tract 2008.01 — 53 (Upper-middle)Tract 2008.02 — 17 (Lower-middle)Tract 2008.05 — 71 (Higher)Tract 2008.06 — 73 (Higher)Tract 2008.07 — 68 (Upper-middle)Tract 2009.04 — 28 (Lower-middle)Tract 2009.05 — 55 (Upper-middle)Tract 2009.06 — 40 (Middle)Tract 2009.07 — 59 (Upper-middle)Tract 2009.08 — 34 (Middle)Tract 2010.01 — 54 (Upper-middle)Tract 2010.02 — 85 (Higher)Tract 2010.03 — 70 (Higher)Tract 2011.02 — 76 (Higher)Tract 2011.03 — 79 (Higher)Tract 2011.04 — 61 (Upper-middle)Tract 2012.03 — 38 (Middle)Tract 2012.04 — 50 (Middle)Tract 2012.05 — 66 (Upper-middle)Tract 2012.06 — 73 (Higher)Tract 2014.03 — 87 (Higher)Tract 2014.04 — 36 (Middle)Tract 2014.05 — 31 (Middle)Tract 2014.06 — 69 (Upper-middle)Tract 2015.02 — 8 (Lower)Tract 2015.03 — 14 (Lower-middle)Tract 2015.04 — 63 (Upper-middle)Tract 2016.01 — 29 (Lower-middle)Tract 2016.02 — 15 (Lower-middle)Tract 2017.01 — 60 (Upper-middle)Tract 9801.00 — no data (unmeasured)Tract 2003.03 — 44 (Middle)
Where this is
Shading: Overall SVI Percentile
Lower (0 to 12)Lower-middle (13 to 29)Middle (30 to 50)Upper-middle (52 to 70)Higher (70 to 87)No data
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.
Median tract: 37th percentile (among all U.S. tracts).
These tracts span the 0th percentile to the 87th percentile. The width of that range is the internal disparity.
Tract 2003.03 is marked below — Near the median.
Well above the median7 (8%) · 25,893 people
Above the median20 (24%) · 76,226 people
Near the median13 (15%) · 51,757 people ◀ Tract 2003.03
Below the median21 (25%) · 84,827 people
Well below the median23 (27%) · 97,041 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 — 7 tracts (80th–100th percentile)
Tract 2001.06 (pop. 5,166) — 87th percentile — Well 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 2014.03 (pop. 5,493) — 87th percentile — Well above the median
Driven by Household Characteristics (well above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (well above); near the median on Socioeconomic Status.
Tract 2001.36 (pop. 3,573) — 86th percentile — Well 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 2010.02 (pop. 3,134) — 85th percentile — Well above the median
Driven by Socioeconomic Status (above), Household Characteristics (above), Racial & Ethnic Minority Status (well above) and Housing Type & Transportation (above).
Tract 2007.00 (pop. 3,952) — 85th percentile — Well 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 2004.09 (pop. 2,908) — 81st percentile — Well above the median
Driven by Socioeconomic Status (well above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (above); near the median on Household Characteristics.
Tract 2001.31 (pop. 1,667) — 81st 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.
Above the median — 20 tracts (60th–80th percentile)
Tract 2011.03 (pop. 3,536) — 79th percentile — Above the median
Driven by Socioeconomic Status (above), Racial & Ethnic Minority Status (well above) and Housing Type & Transportation (above); near the median on Household Characteristics.
Tract 2011.02 (pop. 4,575) — 76th percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (above), Racial & Ethnic Minority Status (well above) and Housing Type & Transportation (above).
Tract 2008.06 (pop. 2,012) — 73rd percentile — Above the median
Driven by Socioeconomic Status (above) and Racial & Ethnic Minority Status (well above); near the median on Household Characteristics and Housing Type & Transportation.
Tract 2001.32 (pop. 4,041) — 73rd 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 2004.17 (pop. 2,155) — 73rd percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (above) and Racial & Ethnic Minority Status (above); near the median on Housing Type & Transportation.
Tract 2012.06 (pop. 2,677) — 73rd percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (well above) and Racial & Ethnic Minority Status (well above); below the median on Housing Type & Transportation.
Tract 2008.05 (pop. 4,479) — 71st percentile — Above the median
Driven by Household Characteristics (above), Racial & Ethnic Minority Status (well above) and Housing Type & Transportation (above); near the median on Socioeconomic Status.
Tract 2001.53 (pop. 4,268) — 71st percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (above) and Racial & Ethnic Minority Status (above); near the median on Housing Type & Transportation.
Tract 2004.18 (pop. 3,165) — 71st 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 2010.03 (pop. 6,107) — 70th percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (above) and Racial & Ethnic Minority Status (well above); near the median on Housing Type & Transportation.
Tract 2004.11 (pop. 5,823) — 70th percentile — Above the median
Driven by Racial & Ethnic Minority Status (above) and Housing Type & Transportation (above); near the median on Socioeconomic Status and Household Characteristics.
Tract 2014.06 (pop. 3,431) — 69th percentile — Above the median
Driven by Socioeconomic Status (well above) and Racial & Ethnic Minority Status (above); near the median on Housing Type & Transportation; below the median on Household Characteristics.
Tract 2003.05 (pop. 5,455) — 68th 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 2008.07 (pop. 3,728) — 68th percentile — Above the median
Driven by Socioeconomic Status (well above) and Racial & Ethnic Minority Status (well above); near the median on Housing Type & Transportation; below the median on Household Characteristics.
Tract 2001.25 (pop. 4,146) — 66th percentile — Above the median
Driven by Socioeconomic Status (above), Household Characteristics (above) and Racial & Ethnic Minority Status (above); near the median on Housing Type & Transportation.
Tract 2012.05 (pop. 3,484) — 66th percentile — Above the median
Driven by Socioeconomic Status (above) and Racial & Ethnic Minority Status (well above); near the median on Household Characteristics and Housing Type & Transportation.
Tract 2004.12 (pop. 1,896) — 65th percentile — Above the median
Driven by Socioeconomic Status (above) and Racial & Ethnic Minority Status (above); near the median on Household Characteristics; below the median on Housing Type & Transportation.
Tract 2015.04 (pop. 4,103) — 63rd 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 2011.04 (pop. 3,602) — 61st percentile — Above the median
Driven by Racial & Ethnic Minority Status (well above) and Housing Type & Transportation (above); near the median on Socioeconomic Status and Household Characteristics.
Tract 2017.01 (pop. 3,543) — 60th 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.
Near the median — 13 tracts (40th–60th percentile)
Tract 2009.07 (pop. 5,371) — 59th percentile — Near the median
Driven by Household Characteristics (well above), Racial & Ethnic Minority Status (above) and Housing Type & Transportation (above); below the median on Socioeconomic Status.
Tract 2001.24 (pop. 4,895) — 56th percentile — Near the median
Driven by Household Characteristics (well above); near the median on Socioeconomic Status, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2009.05 (pop. 5,869) — 55th percentile — Near the median
Driven by Racial & Ethnic Minority Status (above); near the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 2010.01 (pop. 6,024) — 54th percentile — Near the median
Driven by Racial & Ethnic Minority Status (well above); near the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 2008.01 (pop. 3,153) — 53rd percentile — Near the median
Driven by Racial & Ethnic Minority Status (above); near the median on Socioeconomic Status and Household Characteristics; below the median on Housing Type & Transportation.
Tract 2003.01 (pop. 1,531) — 52nd 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 2005.03 (pop. 4,766) — 52nd percentile — Near the median
Driven by Household Characteristics (above) and Racial & Ethnic Minority Status (above); near the median on Housing Type & Transportation; below the median on Socioeconomic Status.
Tract 2012.04 (pop. 3,336) — 50th 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 2001.26 (pop. 3,943) — 50th percentile — Near the median
Driven by Socioeconomic Status (above) and Racial & Ethnic Minority Status (above); near the median on Housing Type & Transportation; below the median on Household Characteristics.
Tract 2001.52 (pop. 2,543) — 50th percentile — Near the median
Driven by Household Characteristics (above) and Housing Type & Transportation (above); near the median on Racial & Ethnic Minority Status; below the median on Socioeconomic Status.
Tract 2005.01 (pop. 2,518) — 48th percentile — Near the median
Driven by Socioeconomic Status (well above) and Racial & Ethnic Minority Status (above); below the median on Household Characteristics and Housing Type & Transportation.
Tract 2003.03 (pop. 3,153) — 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 2009.06 (pop. 4,655) — 40th percentile — Near the median
Driven by Racial & Ethnic Minority Status (above); near the median on Socioeconomic Status and Household Characteristics; below the median on Housing Type & Transportation.
Below the median — 21 tracts (20th–40th percentile)
Tract 2012.03 (pop. 2,920) — 38th 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 2006.00 (pop. 4,874) — 37th percentile — Below the median
Near the median on Socioeconomic Status and Racial & Ethnic Minority Status; below the median on Household Characteristics and Housing Type & Transportation.
Tract 2014.04 (pop. 4,627) — 36th percentile — Below the median
Driven by Household Characteristics (above); below the median on Socioeconomic Status, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2001.39 (pop. 4,263) — 35th percentile — Below 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.
Tract 2004.07 (pop. 5,245) — 34th percentile — Below the median
Near the median on Socioeconomic Status and Racial & Ethnic Minority Status; below the median on Household Characteristics and Housing Type & Transportation.
Tract 2009.08 (pop. 2,958) — 34th percentile — Below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 2001.37 (pop. 1,581) — 33rd percentile — Below the median
Near the median on Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation; below the median on Socioeconomic Status.
Tract 2004.14 (pop. 5,988) — 33rd percentile — 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 2001.38 (pop. 4,008) — 32nd percentile — Below the median
Driven by Household Characteristics (well above); near the median on Racial & Ethnic Minority Status; below the median on Socioeconomic Status and Housing Type & Transportation.
Tract 2014.05 (pop. 2,480) — 31st percentile — Below the median
Driven by Socioeconomic Status (above) and Racial & Ethnic Minority Status (well above); below the median on Household Characteristics and Housing Type & Transportation.
Tract 2001.44 (pop. 3,309) — 30th percentile — Below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 2001.40 (pop. 5,187) — 29th 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 2016.01 (pop. 4,498) — 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 2009.04 (pop. 5,830) — 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 2005.02 (pop. 2,104) — 26th percentile — Below the median
Driven by Housing Type & Transportation (above); below the median on Socioeconomic Status, Household Characteristics and Racial & Ethnic Minority Status.
Tract 2001.51 (pop. 5,619) — 26th 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 2004.13 (pop. 4,237) — 25th 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 2004.16 (pop. 6,608) — 25th 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 2001.33 (pop. 2,901) — 22nd percentile — Below the median
Driven by Racial & Ethnic Minority Status (above); below the median on Socioeconomic Status, Household Characteristics and Housing Type & Transportation.
Tract 2001.41 (pop. 2,997) — 22nd percentile — Below the median
Driven by Racial & Ethnic Minority Status (above) and Housing Type & Transportation (above); below the median on Socioeconomic Status and Household Characteristics.
Tract 2004.04 (pop. 2,593) — 20th percentile — Below the median
Near the median on Socioeconomic Status and Racial & Ethnic Minority Status; below the median on Household Characteristics and Housing Type & Transportation.
Well below the median — 23 tracts (0th–20th percentile)
Tract 2001.35 (pop. 2,086) — 20th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2008.02 (pop. 1,804) — 17th 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 2016.02 (pop. 5,442) — 15th 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 2004.15 (pop. 4,445) — 15th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2015.03 (pop. 5,735) — 14th 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 2001.27 (pop. 6,130) — 14th percentile — Well below the median
Near the median on Household Characteristics; below the median on Socioeconomic Status, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2003.02 (pop. 2,870) — 13th percentile — Well below the median
Near the median on Household Characteristics; below the median on Socioeconomic Status, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2001.49 (pop. 5,240) — 12th 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 2001.23 (pop. 2,920) — 10th 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 2001.47 (pop. 8,379) — 9th 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 2001.34 (pop. 5,067) — 9th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2002.01 (pop. 2,939) — 8th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2015.02 (pop. 5,292) — 8th 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 2001.50 (pop. 4,128) — 5th 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 2001.42 (pop. 3,702) — 5th percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2001.22 (pop. 4,641) — 4th percentile — Well 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 2001.09 (pop. 4,096) — 3rd percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2001.08 (pop. 3,322) — 3rd percentile — Well below the median
Below the median on Socioeconomic Status, Household Characteristics, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2001.46 (pop. 2,861) — 3rd 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 2002.02 (pop. 4,071) — 3rd percentile — Well below the median
Near the median on Household Characteristics; below the median on Socioeconomic Status, Racial & Ethnic Minority Status and Housing Type & Transportation.
Tract 2001.48 (pop. 4,854) — 2nd 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 2001.43 (pop. 2,166) — 2nd 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 2001.45 (pop. 4,851) — 0th 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.

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