Waupaca County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 51,812. The county seat is Waupaca. The county was created in 1851 and organized in 1853. It is named after the Waupaca River, a Menominee language name meaning 'white sand bottom', 'pale water', or 'tomorrow river'.

New London is a city in Outagamie and Waupaca counties Wisconsin, United States. Founded in 1851, the population was 7,295 at the 2010 census. Of this, 5,685 were in Waupaca County, and 1,640 were in Outagamie County.