Polk County Government — Wisconsin | 372 followers on LinkedIn. Serving and representing the public of Polk County with integrity. | Polk County, organized in 1853, contains an incredible variety of natural beauty within its 956 square miles, including lakes and rivers, small towns, rolling hills, farms and forests. Located in northwest Wisconsin, the county seat is Balsam Lake. It has a diverse economy with a mix of agriculture, tourism, manufacturing, and services.