This updated dataset reports the total number of days in which an extreme heat event was above 95 degrees between 2021-2023 at the county and Census Tract levels. Data were obtained from the Centers for Disease Control and Prevention (CDC) Environmental Public Health Tracking Network (EPHTN).
Housing Stress Counties
Housing stress counties are those where at least 29 percent of owner- and renter-occupied housing units had at least one of the following conditions in the 2018–22 5-year ACS: 1) lacking complete plumbing facilities, 2) lacking complete kitchen facilities, 3) with 1.01 or more occupants per room, 4) selected monthly owner costs as a percentage of household income greater than 30 percent, or 5) gross rent as a percentage of household income greater than 30 percent.
Heat Index – Average Days Above 95th Percentile
This updated dataset reports the total number of days in which an extreme heat event was above the 95th percentile between 2021-2023 at the county and Census tract levels. Data were obtained from the Centers for Disease Control and Prevention (CDC) Environmental Public Health Tracking Network (EPHTN).
Low Employment Counties
Low employment counties are those where less than 63 percent of residents ages 25 to 54 were employed in the 2018–22 5-year ACS.Metropolitan and nonmetropolitan areas are based on the U.S. Office of Management and Budget 2023 delineation of core based statistical areas.
Home Loan Originations, 2022
Layer displays the rate of home loan originations per 10,000 population by county and census tract. Additional updates include map layers showing loans by purpose, applicant income, and applicant race/ethnicity.
Population Loss Counties
Population loss counties are those where the number of county residents declined between the 1990 and 2000 censuses and also between the 2000 and 2010 censuses.
Real-time Air Quality Index (AQI) – Ozone and Particulate Matter
This US EPA feature layer is updated hourly and reflects the latest hour of air quality data received from each monitoring site that reports to AirNow. The concentration and AQI values are for Ozone and Particulate Matter (PM) only. Air quality index ranges from 0-5,000 with higher values indicating worse air quality.
Health Insurance Marketplace Enrollment, 2025
Area Deprivation Index by Census Block Group
The 2023 Area Deprivation Index is now available! The ADI map displays rankings of neighborhoods by socioeconomic status disadvantage in a region of interest (e.g. at the state or national level). It includes factors for the theoretical domains of income, education, employment, and housing quality. It can be used to inform health delivery and policy, especially for the most disadvantaged neighborhood groups. The 2023 ADI was constructed using the 2019-2023 5-year estimates from the US Census’ American Community Survey.
On-Farm Market Sites
Layer displays the location of on-farm markets across the US. Data was obtained from the USDA Local Food Directories on July 12, 2025.