Old Mill State Park
Overview
Old Mill State Park is a small Minnesota state park on the Middle River between Argyle and Newfolden on an ancient beach of glacial Lake Agassiz in Marshall County in the northwestern part of the state. It is a 406-acre (164 ha) park.
- Trails
- 5
- Viewpoints
- 12
- Activities
- 0
- POIs
- 24
Opening Hours
08:00 AM – 10:00 PM
Amenities Available
- Paved Parking Lots
Designated vehicle parking areas with clearly marked spaces and ADA-accessible spots mandated by federal law. Most parks offer free or low-cost daily parking passes.
- Restrooms / Flush Toilets
Modern restroom facilities with running water and proper sanitation. Subject to seasonal closures in northern states during winter months.
- Drinking Water Fountains
Potable water stations distributed throughout the park, tested regularly for safety to ensure clean water access for all visitors.
- Picnic Areas & Shelters
Covered pavilions equipped with tables and built-in grills. Shelters are often reservable for group events and birthday parties.
- Hiking & Nature Trails
Marked paths ranging from easy, paved walks to rugged backcountry routes, blazed with color-coded markers and difficulty ratings.
- Campgrounds
Tent and RV sites featuring fire rings and picnic tables. Some include full electric hookups, reservable through Recreation.gov.
- Historic Site
- Swimming Areas / Beaches
Designated swim zones with seasonal lifeguard coverage. Daily water quality reports are posted at the entrance and online.
0.3 mi from park centre
Open · 08:00 – 22:00
- Paved Parking Lots
- Restrooms / Flush Toilets
- Drinking Water Fountains
- Picnic Areas & Shelters
- Hiking & Nature Trails
- Campgrounds
Required Permits
VEHICLE PERMITS
RequiredAlerts & Advisories
Stay informed before heading out
Safety Tips
Safety Advisory
- No major emergency closures are currently reported at Old Mill State Park, but visitors should remain cautious of seasonal elements such as muddy or low-lying sections along the Middle River after heavy rains, active local wildlife, and dense tick populations in wooded or prairie areas.
Popular/Nearby Trails
Hiking (Riverine Forest/Grouse Drum/Larson Pines/Aspen-Oak/Painted Turtle/Native Prairie/River View Trail)
Snowmobile
Snowmobile/Horseback
Hiking (Agassiz Self-guided Trail)
Snowmobile
Nearby Viewpoints
Picnic Area
0.0 mi
Swimming Beach
0.1 mi
Sliding Hill (Winter)
Scuba Diving
0.1 mi
Historic Site
Monument / Memorial
0.1 mi
Overlook
0.1 mi
Overlook
0.1 mi
Overlook
0.2 mi
Campground
0.2 mi
Overlook
0.3 mi
Overlook
0.3 mi
Historic Site (Larson Mill & Pioneer Cabin)
Monument / Memorial
0.3 mi
Overlook
0.5 mi
Nearby Points of Interest
Reviews & Ratings
Community Photos
Frequently Asked Questions
What are the opening hours of Old Mill State Park?
Old Mill State Park is open every day from 8:00 AM to 10:00 PM.
What is Old Mill State Park?
Old Mill State Park is a small Minnesota state park on the Middle River between Argyle and Newfolden on an ancient beach of glacial Lake Agassiz in Marshall County in the northwestern part of the state. It is a 406-acre (164 ha) park.
Where is Old Mill State Park located?
Old Mill State Park is located in Argyle, Minnesota, United States.
How many trails are there at Old Mill State Park?
Old Mill State Park has 5 mapped trails covering 7.6 miles in total. The longest is Hiking (Riverine Forest/Grouse Drum/Larson Pines/Aspen-Oak/Painted Turtle/Native Prairie/River View Trail) at 4.6 miles.
What is there to see at Old Mill State Park?
Places to see at Old Mill State Park include Historic Site, Historic Site (Larson Mill & Pioneer Cabin), Sliding Hill (Winter) and Park Entrance.
What facilities are available at Old Mill State Park?
Facilities at Old Mill State Park include Campgrounds, Drinking Water Fountains, Hiking & Nature Trails, Historic Site, Paved Parking Lots, Picnic Areas & Shelters, Restrooms / Flush Toilets and Swimming Areas / Beaches.
Is there parking at Old Mill State Park?
Yes, Old Mill State Park has parking (Paved Parking Lots).
Are there restrooms at Old Mill State Park?
Yes, Old Mill State Park has restrooms (Restrooms / Flush Toilets).
Can I camp at Old Mill State Park?
Yes, Old Mill State Park has 1 campsite marked on its map.
What safety tips should visitors to Old Mill State Park know?
No major emergency closures are currently reported at Old Mill State Park, but visitors should remain cautious of seasonal elements such as muddy or low-lying sections along the Middle River after heavy rains, active local wildlife, and dense tick populations in wooded or prairie areas.
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