Because many people confused South Stillwater with the city of Stillwater, the city changed its name to Bayport in 1922.
https://github.com/davepinch/pinchy.cc/blob/master/content/topics/places/cities/united-states/minnesota/bayport/bayport.md
Bayport, Minnesota (Wikipedia) Bayport is a city in Washington County, Minnesota, United States. The population was 4,024 at the 2020 census. ⁋ Bayport is located along the St. Croix River, one mile south of Stillwater.