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Customer Service Office Locations

Employees at NorthWestern’s full-service customer offices – located in Montana, South Dakota and Nebraska – can help you start, transfer or discontinue service; can send qualified personnel to your home for service-related issues; can accept and process cash payments; and can assist with questions regarding billing, payments, service calls, etc.

Office hours vary; please reference office hours listed by location below.

Montana

Billings
1944 Monad Road
Billings, MT 59102
Open M-F, 8 a.m. -5 p.m.

Bozeman
121 East Griffin Drive
Bozeman, MT 59771-0490
Open M-F, 8 a.m. - 5 p.m.

Butte
400 Oxford Street
Butte, MT 59701
Open M-F, 8 a.m. - 5 p.m.

Great Falls
1501 N River Road
Black Eagle, MT 59414
Open M-F, 8 a.m. - 5 p.m.

Helena
1313 North Last Chance Gulch
Helena, MT 59601
Open M-F, 8 a.m. - 5 p.m.

Kalispell
890 N. Meridian Rd.
Kalispell, MT 59904-2888
Open M-F, 8 a.m. - 5 p.m.

Missoula
1903 S. Russell St.
Missoula, MT 59806
Open M-F, 8 a.m. - 5 p.m.

South Dakota

Aberdeen
113 S Centennial Street
Aberdeen, SD 57401
Open M-F, 8 a.m. - 5 p.m.

Brookings
1232 22nd Avenue South
Brookings, SD 57006
Open M-F, 8 a.m. - 5 p.m.

Chamberlain
115 N Main
Chamberlain, SD 57325
Open Mon/Wed/Fri, 8:30 a.m. - 4:30 p.m.

Huron
600 Market Street W
Huron, SD 57350
Open M-F, 8 a.m. - 5 p.m.

Kimball
121 S Main
Kimball, SD 57355
Open Tue/Thur, 8 a.m. - 5 p.m.

Mitchell
300 S Burr
Mitchell, SD 57301
Open M-F, 8 a.m. - 5 p.m.

Wagner
108 N Main
Wagner, SD 57380
Open M-F, 9 a.m. - 12:30 p.m.
& 1 p.m. - 4 p.m.

Yankton
313 Cedar
Yankton, SD 57078
Open M-F, 8 a.m. - 5 p.m.

Nebraska

Grand Island
515 W Third
Grand Island, NE 68801
Open M-F, 8 a.m. - 5 p.m.

Kearney
1023 E 25th St.
Kearney, NE 68847
Open, M-F, 8 a.m. - 5 p.m.

North Platte
215 E Fifth
North Platte, NE 69101
Open M-F, 8 a.m. - 5 p.m.

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