[5] Lakeside is immediately west of the City and County of Denver, the most populous municipality in the state.

A year after its incorporation on November 12, 1907, the Lakeside Amusement Park, nicknamed "White City", opened on the eastern shores.

A shopping mall, Lakeside Center, was built in 1956 on the southern shore, but fell into financial troubles due to lack of business around the turn of the century[7] and was converted into a Walmart and strip mall circa 2010.

The amusement park, shopping area, and lake occupy almost all of the tiny municipality.

Residences are limited to a handful of houses in the southeast corner of the town occupied by employees of the amusement park.