Nearly two out of every three counties (64 percent) have an identified brownfield property. Cook County, Ill. alone has more than 600 properties, the most of any county with a brownfield site, with the median number of sites for brownfield counties reaching five properties. These sites are concentrated in rust-belt and other former industrial- heavy regions of the country. With more than 450,000 total estimated sites, brownfields impact every county to varying degrees.

Brownfield properties can come in many shapes and sizes. Often, they are thought of as large abandoned industrial complexes, but it is more common for brownfield sites to be smaller properties like former gas stations, dry cleaners or automotive repair garages. Brownfield sites can also be agricultural, residential, railroad sites, chemical manufacturing plants or public buildings.

Download Primer

Related News

Construction of Amazon Mid-Atlantic Region data center in Loudoun County, Va. Photo by Getty Images
County News

Counties try to keep data center development in bounds

Once a cash cow, data center development is becoming a more delicate planning issue for counties, particularly as AI use drives demand.

Santa Claus had an unwelcome surprise for Milwaukee County, Wis. Parks workers when they uncovered his gifts in an illegal dumping site. Photo courtesy of Peter Bratt
County News

New trails in Milwaukee County help curtail illegal park dumping

While new fines will help defray cleanup costs, Milwaukee County, Wis. Parks hopes making it harder to reach remote places will reduce illegal dumping.

Pipes
Advocacy

EPA announces proposed Lead and Copper Rule Improvements

EPA announces proposed Lead and Copper Rule Improvements.

THE_County Countdown_working_image-4.png
Advocacy

County Countdown – Nov. 4, 2024

This week's County Countdown features interviews from this year’s NACo Annual Conference.

Budgeting
Advocacy

IRS Announces Direct Pay Election Extension for Clean Energy Projects

The IRS has granted extensions to file Form 990-T for those making a Direct Pay election.

THE_County Countdown_working_image-4.png
Advocacy

County Countdown – Oct. 22, 2024

Every other week, NACo's County Countdown reviews top federal policy advocacy items with an eye towards counties and the intergovernmental partnership.