Merton is a town in Waukesha County, Wisconsin, United States; before Wisconsin statehood, it was called Warren. The population was 8,277 at the 2020 census. The town surrounds the villages of Chenequa and Merton. The unincorporated communities of Camp Whitcomb, Monches, and North Lake are in the town and the unincorporated community of Stone Bank is partially in the town. The pioneer Swedish-American settlement of New Upsala was also at one time located within Merton.

Waukesha County is a county in the U.S. state of Wisconsin. As of the 2020 United States Census, the population was 406,978, making it the third-most populous county in Wisconsin. Its median income of $88,985 placed it as the only county in Wisconsin on the list of the 100 highest-income counties in the U.S. by median income as of 2020. Its county seat and largest city is Waukesha.