Columbia County is a county located in the U.S. state of Wisconsin. As of the most recent data available, the county has a population of approximately 52,468 people, with a population density of about 67.79 persons per square mile.
The county spans a total land area of 774.00 square miles (2,005.00 square kilometers). The administrative center and county seat is Portage, which often serves as a hub for local governance and services. The largest city within the county by population is Portage.
Geographically, Columbia County experiences varied elevations, with its highest point at Leeds 1,059 ft and its lowest point at Lake Wisconsin 0 ft. The region operates in the UTC-6.