Kalispell Montana ZIP Codes
Kalispell holds 3 ZIP codes, all inside one county and one postal prefix.
Every ZIP code in Kalispell
| ZIP code | County |
|---|---|
| 59901 | Flathead County |
| 59903 | Flathead County |
| 59904 | Flathead County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Kalispell codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Kalispell. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Kalispell ZIP code begins 599. Those first three digits identify the sectional center facility that processes mail for this part of Montana. Statewide that range covers 30 ZIP codes, so Kalispell accounts for 10% of it.
Every Montana ZIP prefix and the region it covers →
Area codes covering Kalispell
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Kalispell occupies.
Kalispell Montana area codes in full →
Where Kalispell's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Kalispell
| City | Distance | ZIP codes |
|---|---|---|
| Columbia Falls Montana ZIP codes | 12 mi | 1 ZIP code |
| Whitefish Montana ZIP codes | 15 mi | 1 ZIP code |
| Polson Montana ZIP codes | 38 mi | 1 ZIP code |
| Hot Springs Montana ZIP codes | 45 mi | 1 ZIP code |
| Ronan Montana ZIP codes | 49 mi | 1 ZIP code |
| Eureka Montana ZIP codes | 56 mi | 1 ZIP code |
| Libby Montana ZIP codes | 58 mi | 1 ZIP code |
| Plains Montana ZIP codes | 58 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.