Lake Mills is a city in Winnebago County, Iowa. The population was 2,143 at the time of the 2020 census. Lake Mills was platted in part of the northeast quadrant of Center Township in 1869. A gristmill had been built at the site in 1864. Lake Mills was incorporated as a city in 1880. The name Lake Mills comes from the fact that the town was built on what was then the shoreline of Rice Lake. During the first half of the 20th century the city depended on Cool Spring Canning Company for jobs. When the canning plant closed in 1957, an aggressive group of Lake Mills' residents began what has turned out to be a highly successful drive to create jobs for people in the area.
Lake Mills is home to the Winnebago County Freedom Rock, a breathtaking Arlington Veterans Park, downtown murals and a "Promise of America" sculpture. Dive into area history with a visit to the 1901 Victorian House and Gardens or catch the latest movies at the historic "The Mills" Theater. Discover all kinds of outdoor adventure at nearby Rice Lake State Park: boat or fish on the lake, go bird watching or enjoy a picnic at the lodge. The annual July Jubilee celebration is typically held the second weekend in July.