303(d) Impaired Waterbodies
This layer displays impaired waterbodies, which means waterbodies not able to be used for certain purposes due to water quality from physical, chemical and biological factors.
Hypertension Mortality for 2019-23 by County
This layer displays essential hypertension and hypertensive renal disease mortality rates from the CDC’s National Vital Statistics System – Mortality database. Data are 5-year aggregates for 2019-23.
Firearm-related Injury Mortality for 2018-22 by County
This layer displays firearm-related injury mortality rates from the CDC’s National Vital Statistics System – Mortality database. Data are 5-year aggregates for 2018-22 and grouped by ICD-10 codes.
HIV Incidence by County, 2022
This layer displays the total number and rate of new HIV infections during the year 2022. Data are from the Centers for Disease Control and Prevention (CDC) Sexually Transmitted Diseases Surveillance System (STDSS).
Influenza Vaccination by County, Medicare Population, 2021
This layer displays the percentage of Medicare beneficiaries who received a mammography in the latest report year (2020).
Fatal Motor Vehicle Crashes by Location, 2021
This layer displays the location or intersection of fatal crashes occurring in 2021. This layer can be toggled to view fatal crashes involving a drunk driver, and crashes with pedestrian fatalities.
Firearm Mortality by County and Census Tract, 2023-24
This layer displays timely information on the estimated firearm-related mortality rate for counties and census tracts using provisional and final death data. Some census tracts are grouped to protect data privacy. Rates are modeled for areas with greater than 0 but fewer than 10 deaths in the report period.
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.
Cancer Incidence Rates by County, 2013-17
Layer displays cancer incidence rates (all sites) per 100,000 population by state and county. Additional map layers from this update include incidence rates for breast cancer, colon and rectum cancer, lung cancer, prostate cancer, and more.
Dominant Language Spoken at Home
This layer displays the predominant language spoken at home (excluding English) for towns and counties in the United States. Data are from the 2018-22 American Community Survey.