State Park · Montana

Big Arm State Park

Big Arm State Park (large dot) and the other state parks in Montana. No free photo of this park yet.

Location: Lake County, Montana
Nearest town: 10.7 miles northwest of Polson
Type: State Park

About Big Arm State Park

Designated in 1966, this park functions as one section of the larger Flathead Lake State Park system. It sits along the west side of Flathead Lake, the biggest natural body of fresh water in the western part of the country. Visitors can fish, launch boats, swim, and stay overnight in an RV or tent.

Hours, fees, camping, reservations and closures are set by the park and change often. Check the official park site before you go.

Getting there

Big Arm State Park is in Lake County, Montana, 10.7 miles northwest of Polson. The Directions button takes you to the park's mapped location; the entrance may be elsewhere, so check the official site for the address to use.

State parks near Big Arm State Park

Within 60 miles, closest first, straight-line. All 44 in Montana →

Towns near Big Arm State Park

State parks near Kalispell

Facts from Wikidata, checked September 25, 2026. Distances are straight-line.