Columbia County | |
|---|---|
 Columbia County courthouse in December 2014 | |
 Location within the U.S. state of Wisconsin | |
 Wisconsin's location within the U.S. | |
| Coordinates: 43°28′N 89°20′W / 43.47°N 89.33°W | |
| Country |  United States |
| State |  Wisconsin |
| Founded | 1846 |
| Named for | Christopher Columbus |
| Seat | Portage |
| Largest city | Portage |
| Area | |
• Total | 796 sq mi (2,060 km2) |
| • Land | 766 sq mi (1,980 km2) |
| • Water | 30 sq mi (80 km2) 3.8% |
| Population | |
• Total | 58,490 |
• Estimate (2023) | 58,091  |
| • Density | 76.4/sq mi (29.5/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 6th |
| Website | www |
Columbia County is a county located in the U.S. state of Wisconsin. As of the 2020 census, the population was 58,490.[2] Its county seat and largest city is Portage.[3] The county was created in 1846[4] as part of Wisconsin Territory.
Columbia County is part of the Madison, WI Metropolitan Statistical Area as well as the Madison-Janesville-Beloit, WI Combined Statistical Area.
- ^ Cite error: The named reference
2020-census-55021was invoked but never defined (see the help page). - ^ "State & County QuickFacts". United States Census Bureau. Archived from the original on June 6, 2011. Retrieved January 18, 2014.
- ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
- ^ "Wisconsin: Individual County Chronologies". Wisconsin Atlas of Historical County Boundaries. The Newberry Library. 2007. Archived from the original on April 14, 2017. Retrieved August 13, 2015.