ZIP CodesZIP codes in Flathead County, Montana
Flathead County, Montana has 18 ZIP codes in this list, from 59901 to 59937. They cover 16 places, among them Kalispell, Bigfork, Columbia Falls and Coram.
Nothing in this county matches.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 59901 | Kalispell | 469 | 48.203, -114.304 |
| 59903 | Kalispell | no area | 48.224, -114.430 |
| 59904 | Kalispell | no area | 48.240, -114.256 |
| 59911 | Bigfork | 492 | 48.063, -114.073 |
| 59912 | Columbia Falls | 189 | 48.353, -114.178 |
| 59913 | Coram | 52.1 | 48.434, -114.058 |
| 59916 | Essex | 122 | 48.278, -113.613 |
| 59919 | Hungry Horse | 2.3 | 48.386, -114.061 |
| 59920 | Kila | 186 | 48.074, -114.510 |
| 59921 | Lake Mc Donald | no area | 48.299, -113.950 |
| 59922 | Lakeside | 38.2 | 48.022, -114.227 |
| 59925 | Marion | 377 | 48.084, -114.745 |
| 59926 | Martin City | 10.0 | 48.392, -114.038 |
| 59927 | Olney | 194 | 48.545, -114.592 |
| 59928 | Polebridge | 937 | 48.821, -114.384 |
| 59932 | Somers | 27.2 | 48.079, -114.236 |
| 59936 | West Glacier | 1,480 | 48.500, -113.979 |
| 59937 | Whitefish | 311 | 48.404, -114.351 |
The ZIP code areas of Flathead County add up to about 4,886 square miles of land (12,656 sq km) as the Census Bureau draws them. The largest is 59936 (West Glacier), with 1,480 square miles.
Places with more than one code here: Kalispell (3 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Kalispell, MT 59901.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.