ZIP Code 59921

59921 is one of Montana's ZIP codes, delivering to addresses in Lake Mc Donald, Flathead County.

City: Lake Mc Donald
County: Flathead County
State: Montana
Prefix: 599xx

Where this code sits

59921 is part of the 599xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Lake Mc Donald.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 59921 delivers to without sharing its boundary.

406 Area code 406

ZIP codes nearest 59921

The ZIP codes whose reference points sit closest to 59921.
ZIP code	Distance	Delivers to
ZIP code 59926	7.6 mi	Martin City, MT
ZIP code 59919	7.9 mi	Hungry Horse, MT
ZIP code 59913	11 mi	Coram, MT
ZIP code 59912	11 mi	Columbia Falls, MT
ZIP code 59936	14 mi	West Glacier, MT
ZIP code 59904	15 mi	Kalispell, MT
ZIP code 59916	16 mi	Essex, MT
ZIP code 59911	17 mi	Bigfork, 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 59921, plotted from its record coordinates.

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

Scope ZIP code 59921. 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.