Bayside is a village in Milwaukee and Ozaukee counties in the U.S. state of Wisconsin. The population was 4,482 at the 2020 census. Of this, 4,378 were in Milwaukee County, and only 104 were in Ozaukee County.
Bayside is located at (43.180275, -87.904735).
According to the United States Census Bureau, the village has a total area of , all of it land. Lake Michigan borders the eastern edge of Bayside. Most of the village is in Milwaukee County, but a small portion at the end of Lake Drive bordering Fish Creek is in Ozaukee County.
The land that became Bayside was originally inhabited by Native Americans, who surrendered their land to the United States Federal Government in the 1830s. However, it is possible that the Potawatomi Chief Waubeka maintained a summer camp in Bayside and a winter camp in the Ozaukee County community that bears his name as late as 1845.
In the 19th century, the community was part of the Town of Milwaukee, and most of the