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National Average Prevalence

National Average
21.4%
Category
Health Status
Counties Reporting
5,914

Prevalence Range

Lowest Prevalence
10.4%
Highest Prevalence
42.7%

Top 10 Highest-Prevalence Counties

Rank County State Prevalence
1 Dimmit TX 42.7%
2 Zavala TX 41.9%
3 Dimmit TX 41.9%
4 Zavala TX 41.6%
5 Oglala Lakota SD 41.1%
6 Starr TX 40.8%
7 Jim Hogg TX 40.8%
8 Starr TX 40.3%
9 Zapata TX 40.2%
10 Zapata TX 40.0%

Top 10 Lowest-Prevalence Counties

Rank County State Prevalence
1 Falls Church VA 10.4%
2 Douglas CO 10.7%
3 Los Alamos NM 11.0%
4 Falls Church VA 11.0%
5 Douglas CO 11.1%
6 Hinsdale CO 11.3%
7 Pitkin CO 11.3%
8 Chittenden VT 11.3%
9 Broomfield CO 11.4%
10 Delaware OH 11.4%

Related Entities

Methodology

Data source: CDC PLACES County-Level Data (dataset ID: cdc-places). Vintage: 2026. Downloaded: 2026-04-13. Rows in source: 229,298.

CDC PLACES provides county-level prevalence estimates for chronic diseases, health behaviors, and preventive services from the Behavioral Risk Factor Surveillance System (BRFSS). Values represent model-based estimates of age-adjusted prevalence.

Full methodology →