Old Mill State Park
Old Mill State Park is a state park in Marshall County. It was established in 1937.
Old Mill State Park State Park spans an unrecorded acreage acres in Minnesota — a designated recreation destination with the full set of facilities the state park system provides. The park is not lake-dense — 0 lakes nearby in our dataset — but a nearby lake (—) is the standout among them.
State parks pair well with the LakeGrade dataset: the park itself usually has interpretive signage explaining the local lake system, but the per-lake grade tells you which actual lake in the system to head to.
Designation
State Park
County
Marshall County
Established
1937
Other Parks in the Area
- Lake Bronson State Park— State Park, 25.1 mi
- Red River State Recreation Area— State Recreation Area, 36.6 mi
Park location and metadata sourced from Wikidata. For trail maps, camping reservations, and current conditions, visit the official MN DNR page. Lake grades are derived from EPA Water Quality Portal data using Metropolitan Council standards.
Source: EPA National Aquatic Resource Surveys, 2026.