ZIP Code 58634

58634 is one of North Dakota's ZIP codes, delivering to addresses in Grassy Butte, McKenzie County.

City: Grassy Butte
County: McKenzie County
State: North Dakota
Prefix: 586xx

Where this code sits

58634 is part of the 586xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Grassy Butte.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 58634 delivers to without sharing its boundary.

701 Area code 701

ZIP codes nearest 58634

The ZIP codes whose reference points sit closest to 58634.
ZIP code	Distance	Delivers to
ZIP code 58627	15 mi	Fairfield, ND
ZIP code 58640	24 mi	Killdeer, ND
ZIP code 58854	25 mi	Watford City, ND
ZIP code 58835	26 mi	Arnegard, ND
ZIP code 58831	30 mi	Alexander, ND
ZIP code 58626	32 mi	Dunn Center, ND
ZIP code 58757	35 mi	Mandaree, ND
ZIP code 58642	36 mi	Manning, ND

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 58634, plotted from its record coordinates.

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

Scope ZIP code 58634. 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.