Travelers heading west from 1812 to 1857 used this park as a campsite long before Olathe was founded.
During the Civil War, this location was a popular campground for Union soldiers. It has also been the site of a grist mill, general store, creamery and ice house. It was also a privately owned pond where citizens could fish, swim and ice skate.
The swimming pool was built under the Works Progress Administration (WPA). A parking lot and tennis courts were added north of the pool.
The name was changed from City Park to Mill Creek Park in a City contest to rename the park. The four-acre park is the City's oldest neighborhood park. Dedicated in 1935, Mill Creek Park serves the downtown area.
