Flood Vulnerability

An update is available for the estimated population living within a 100-year flood zone. This indicator reports the estimated number of people living within a 100-year flood hazard area based on the 2020 LandScan estimated population counts and EPA estimated flood hazard areas. The EPA EnviroAtlas dataset provides an estimate of the 100-year floodplain for the conterminous United States at 30-meter resolution to fill the gaps in the FIRM. The model hit rate for the CONUS was 0.79 compared to the FIRM, indicating that the model captured 79% of the 100-year floodplain identified by FEMA.

Access to SNAP-Authorized Retailers – Rate

This layer displays the number and rate of SNAP-authorized retailers in each census tract. Locations of retailers are based on the December, 2025 USDA directory of SNAP-authorized retailers.

Gross Domestic Product by County, 2023

New map and data from the Bureau of Economic Analysis display information about Gross domestic product (Real GDP by county and metropolitan area is an inflation-adjusted measure of each area’s gross product that is based on national prices for the goods and services produced within the area. The real estimates of gross domestic product (GDP) by county and metropolitan area are measured in chained (2017) dollars.). New breakouts display trend over the last 10 years. Affected Indicator:

Economy and Income

  • Gross Domestic Product (GDP)

Improvements made to calculations for High School Graduation Rate indicator.

Service area / multi-county area estimates are now available. Graduation rates are provided from County Health Rankings; freshman base enrollment (denominator) figures are generated from the National Center for Education Statistics (NCES) Common Core of Data files; diplomas issued (numerator) figures are estimated through the combination of these sources. See indicator methodology and footnotes for more information. Affected indicators:

Social & Economic Factors

  • High School Graduation Rate

Improvements made to race/ethnicity reporting for all California Health Interview Survey (CHIS) data.

Estimates suppressed for counties and service areas where indicator data is statistically unstable. Some race/ethnicity groups no longer reported, but reported data is more accurate. Affected indicators:

Clinical Care

  • Absence of Dental Insurance Coverage
  • Dental Care Affordability
  • Dental Care Utilization (Youth)
  • HIV Screenings

Health Behaviors

  • Adequate Fruit/Vegetable Consumption (Youth)

Health Outcomes

  • Heart Disease Prevalence
  • Poor Mental Health