ZIP CodesMontana ZIP codes: every city, town and county
404 ZIP codes of Montana (MT), listed by place and by county. Every code of the state starts with 5.
Montana at a glance
- ZIP codes in this list
- 404
- Lowest and highest
- 59001 to 59937
- First digit
- 5
- Three-digit prefixes
- 10, from 590 to 599
- Counties or equivalent areas
- 56
- Places named
- 360
- Most codes for one place
- Billings (14)
- Largest ZIP code area
- 59301 Miles City, 2,852 sq mi
By county
- Beaverhead County 8
- Big Horn County 10
- Blaine County 7
- Broadwater County 4
- Carbon County 10
- Carter County 5
- Cascade County 18
- Chouteau County 7
- Custer County 4
- Daniels County 4
- Dawson County 4
- Deer Lodge County 2
- Fallon County 3
- Fergus County 10
- Flathead County 18
- Gallatin County 13
- Garfield County 5
- Glacier County 4
- Golden Valley County 2
- Granite County 3
- Hill County 7
- Jefferson County 6
- Judith Basin County 5
- Lake County 12
- Lewis and Clark County 15
- Liberty County 3
- Lincoln County 7
- Madison County 11
- McCone County 3
- Meagher County 3
- Mineral County 6
- Missoula County 16
- Musselshell County 4
- Park County 9
- Petroleum County 2
- Phillips County 6
- Pondera County 6
- Powder River County 5
- Powell County 7
- Prairie County 3
- Ravalli County 10
- Richland County 5
- Roosevelt County 7
- Rosebud County 11
- Sanders County 9
- Sheridan County 9
- Silver Bow County 8
- Stillwater County 8
- Sweet Grass County 4
- Teton County 6
- Toole County 8
- Treasure County 3
- Valley County 11
- Wheatland County 4
- Wibaux County 1
- Yellowstone County 23
By city or town
No place in Montana matches. Try fewer letters, or the look-up for the whole country.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. Not connected with the United States Postal Service; for mailing, confirm the address with USPS.