ZIP Code 59903

59903 is one of Montana's ZIP codes, delivering to addresses in Kalispell, Flathead County.

City: Kalispell
County: Flathead County
State: Montana
Prefix: 599xx

Where this code sits

59903 is part of the 599xx range, the group of codes handled by one mail processing centre. Kalispell is served by 3 ZIP codes in total; the full list, with the county each falls in, is on the Kalispell page.

Kalispell Montana ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 59903 delivers to without sharing its boundary.

406 Area code 406

ZIP codes nearest 59903

The ZIP codes whose reference points sit closest to 59903.
ZIP code	Distance	Delivers to
ZIP code 59901	6.0 mi	Kalispell, MT
ZIP code 59904	8.1 mi	Kalispell, MT
ZIP code 59920	11 mi	Kila, MT
ZIP code 59937	13 mi	Whitefish, MT
ZIP code 59932	13 mi	Somers, MT
ZIP code 59912	15 mi	Columbia Falls, MT
ZIP code 59922	17 mi	Lakeside, MT
ZIP code 59925	18 mi	Marion, MT

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 59903, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 59903. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.