List of islands of Montana

There are at least 115 named Islands in Montana. These islands occur in rivers, lakes and reservoirs.

Islands east of the Continental Divide

Missouri River

• Archers Island, Chouteau County, Montana, , el.
• Baker Bar, Chouteau County, Montana, , el.
• Boggs Island, Chouteau County, Montana, , el.
• Brule Bar, Chouteau County, Montana, , el.
• Buckshot Island, Cascade County, Montana, , el.
• Chelsea Island, Roosevelt County, Montana, , el.
• Council Island, Chouteau County, Montana, , el.
• Cow Island, Blaine County, Montana, , el.
• Crow Coulee Bar, Chouteau County, Montana, , el.
• Duck Island, Valley County, Montana, , el.
• Evans Bend, Chouteau County, Montana, , el.
• Fisher Island, Cascade County, Montana, , el.
• Grand Island, Phillips County, Montana, , el.
• Holmes Council Islands, Fergus County, Montana, , el.
• Iron City Islands, Fergus County, Montana, , el.
• Jones Island, Phillips County, Montana, , el.
• King Island, Fergus County, Montana, , el.
• Lower Two Calf Island, Phillips County, Montana, , el.
• Nelson Island, Cascade County, Montana, , el.
• PN Island, Fergus County, Montana, , el.
• Park Island, Cascade County, Montana, , el.
• Pine Island, Cascade County, Montana, , el.
• Pablo Island, Chouteau County, Montana, , el.
• Roosevelt Island, Chouteau County, Montana, , el.
• Sacajawea Island, Cascade County, Montana, , el.
• Scout Island, Valley County, Montana, , el.
• Shonkin Bar, Chouteau County, Montana, , el.
• Skinners Island, Roosevelt County, Montana, , el.
• Steamboat Island, Cascade County, Montana, , el.
• Sturgeon Island, Blaine County, Montana, , el.
• Taylor Island, Cascade County, Montana, , el.
• Three Islands, Chouteau County, Montana, , el.
• Upper Two Calf Island, Phillips County, Montana, , el.
• White Shield Island, Roosevelt County, Montana, , el.
• Wolf Island, Chouteau County, Montana, , el.
• Yorks Islands, Broadwater County, Montana, , el.

Yellowstone River

• Beaver Island, Richland County, Montana, , el.
• Big Marys Island, Yellowstone County, Montana, , el.
• Breakneck Island, Richland County, Montana, , el.
• Buella Island, Richland County, Montana, , el.
• Cherry Island, Yellowstone County, Montana, , el.
• Chrome Island, Wibaux County, Montana, , el.
• Crittenden Island, Richland County, Montana, , el.
• Devils Island, Richland County, Montana, , el.
• Diamond Island, Richland County, Montana, , el.
• Dovers Island, Yellowstone County, Montana, , el.
• Duck Island, Richland County, Montana, , el.
• Elk Island, Richland County, Montana, , el.
• Elms Island, Richland County, Montana, , el.
• Government Island, Yellowstone County, Montana, , el.
• Gros Ventre Island, Richland County, Montana, , el.
• Idiom Island, Richland County, Montana, , el.
• Howery Island, Treasure County, Montana, , el.
• Joes Island, Dawson County, Montana, , el.
• Livingston Island, Park County, Montana, , el.
• Marys Island, Richland County, Montana, , el.
• Monroe Island, Dawson County, Montana, , el.
• Pirogue Island, Custer County, Montana, , el.
• Randalls Island, Yellowstone County, Montana, , el.
• Schaffer Island, Dawson County, Montana, , el.
• Seven Sisters Island, Richland County, Montana, , el.
• Siebeck Island, Park County, Montana, , el.
• Snake Island, Richland County, Montana, , el.
• Spraklin Island, Yellowstone County, Montana, , el.
• Westover Island, Carbon County, Montana, , el.

Other waters east of the divide

• Big Island, Sheridan County, Montana, , el. in Medicine Lake
• Bruces Island, Sheridan County, Montana, , el. in Medicine Lake
• Far West Island, Big Horn County, Montana, , el. in the Big Horn River
• Fire Island, Sweet Grass County, Montana, , el. in the Boulder River
• Gull Island, Sheridan County, Montana, , el. in Medicine Lake
• Long Island, Phillips County, Montana, , el. in Lake Bowdoin
• Lovell Island, Beaverhead County, Montana, , el. in the Beaverhead River
• Pelican Islands, Phillips County, Montana, , el. in Lake Bowdoin
• Smith Island, Beaverhead County, Montana, , el. in the Beaverhead River
• The Island, Carter County, Montana, , el. in the Little Missouri River
• Thunderbird Island, Glacier County, Montana, , el. in Saint Mary Lake
• Youngs Island, Sheridan County, Montana, , el. in Medicine Lake
• Wild Goose Island, Glacier County, Montana, , el. in Saint Mary Lake
• Woody Island, Phillips County, Montana, , el. in Lake Bowdoin
• York Island, Garfield County, Montana, , el. in Fort Peck Lake

Islands west of the Continental Divide

Flathead Lake

• Bird Island, Lake County, Montana, , el.
• Bull Island, Lake County, Montana, , el.
• Cedar Island, Lake County, Montana, , el.
• Cromwell Island, Lake County, Montana, , el.
• Douglas Islands, Lake County, Montana, , el.
• Dream Island, Lake County, Montana, , el.
• Goose Island, Lake County, Montana, , el.
• Invitation Island, Flathead County, Montana, , el.
• Melita Island, Lake County, Montana, , el.
• Little Bull Island, Lake County, Montana, , el.
• Mary B Island, Lake County, Montana, , el.
• Rock Island, Lake County, Montana, , el.
• Shelter Island, Lake County, Montana, , el.
• Wild Horse Island, Lake County, Montana, , el.

Hungry Horse Reservoir

• Clayton Island, Flathead County, Montana, , el.
• Elk Island, Flathead County, Montana, , el.
• Fire Island, Flathead County, Montana, , el.
• Kelly Island, Flathead County, Montana, , el.
• Lost Island, Flathead County, Montana, , el.

Lake Koocanusa

• Cedar Island, Lincoln County, Montana, , el.
• Kins Island, Lincoln County, Montana, , el.
• Murray Island, Lincoln County, Montana, , el.
• Whites Island, Lincoln County, Montana, , el.
• Yarnell Island, Lincoln County, Montana, , el.

Other waters west of the divide

• Deer Island, Flathead County, Montana, , el. in Echo Lake
• Callows Island, Lincoln County, Montana, , el. in Bull Lake
• Firemens Island, Flathead County, Montana, , el. in Echo Lake
• Kelly Island, Missoula County, Montana, , el. in the Clark Fork River
• Pleasant Island, Flathead County, Montana, , el. in Foy Lake
• Rock Island, Sanders County, Montana, , el. in Noxon Reservoir
• Scott Island, Lincoln County, Montana, , el. in the Kootenai River
• Sourdough Island, Missoula County, Montana, , el. in Salmon Lake (Montana)
• Steamboat Island, Sanders County, Montana, , el. in the Clark Fork River
• The Island, Flathead County, Montana, , el. in Whitefish Lake

Notes