[6] According to the United States Census Bureau, the village has a total area of 2.39 square miles (6.19 km2), all of it land.

[8] In the 19th century, the community was part of the Town of Milwaukee, and most of the land was used for logging and then farming by the early Dutch-American settlers.

In 1885, the Uihlein family, which owned the Joseph Schlitz Brewing Company, began purchasing land in Bayside, which became Nine Mile Farm, where the company bred draft horses for the brewery.

The Uihlein family also kept chickens and cows on the property, and began reforesting the area around 1910.

[9] In 1969, the Schlitz Foundation considered getting rid of the land, which caused a debate in Bayside over whether it should become a public space or private developments.

[10] In the 1890s and early 20th century, prominent Milwaukeeans, including Jacob Donges and Frederick Usinger, began to construct summer homes in the "Fairy Chasm" community near Lake Michigan.

[11] The Fish Creek Park Company, organized in 1892, was one group that built vacation homes in Ozaukee County portion of what would become Bayside.

[14] In 1955, some of the residents of the Fairy Chasm community in Ozaukee County petitioned to join Bayside.

The western part of the village is served by the Maple Dale-Indian Hill School District, where students attend Indian Hill Elementary and Maple Dale Middle Schools.

Nicolet High School in Glendale serves all students residing in Bayside.