Oak Park Heights is a city in Washington County, Minnesota, United States. It is on the west bank of the St. Croix River and is included in the Minneapolis–Saint Paul metropolitan area. The city is just south of Stillwater. Oak Park Heights' population was 4,849 at the 2020 census and had a population density of 1,456 inhabitants per square mile (562.2km2). Oak Park Heights has many historical places like the Stillwater Overlook, and the Log Cabin.