Polk County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 44,977. Its county seat is Balsam Lake. The county was created in 1853 and named for United States President James K. Polk.

Amery is a city in Polk County, Wisconsin, United States, along the Apple River. It is a part of Wisconsin's 7th congressional district. The population was 2,902 at the 2010 census. The city was named in honor of William Amery, a carpenter who held several local offices in the 1870s.