Skip to main content

Environmental & Demographic Data by County

ADEQ has developed an online tool that provides Arizonans with environmental and demographic data for each county in the state.

Information for each county includes:


  • Air quality: prescribed burns and non-attainment areas for ozone, particulate matter, lead and SO2
  • Water quality: impaired waters and drinking water contaminants exceeding federal limits
  • Waste/cleanups: National Response Center (NRC) incidents, hazardous waste generators (large quantity), haz waste cleanups, superfund and voluntary cleanups and leaking underground storage tanks (USTs)


  • total population
  • age of population
  • population by generation type (e.g., millennials, baby boomers, etc.)
  • average household annual income
  • average home value
  • percentage of households below the federal poverty line
  • race/ethnicity
  • average unemployment rate
  • voter registration

You can view demographic and environmental information using the tabs on the upper left. Mouse over each section to show more in-depth data and filter by county | View Demographics >