All are named after President Franklin Pierce except in North Dakota.
- one of 159 counties in Georgia, USA, with its county seat in Blackshear.
- one of 93 counties in Nebraska, USA, county seat Pierce.
- one of 53 counties in North Dakota, USA, county seat Rugby. Named after Gilbert A. Pierce.
- one of 39 counties in Washington, USA, county seat Tacoma.
- one of 72 counties in Wisconsin, USA, county seat Ellsworth.