ZIP Code 58631

58631 is one of North Dakota's ZIP codes, delivering to addresses in Glen Ullin, Morton County.

City: Glen Ullin
County: Morton County
State: North Dakota
Prefix: 586xx

Where this code sits

58631 is part of the 586xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Glen Ullin.

Glen Ullin North Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 58631 delivers to without sharing its boundary.

701 Area code 701

ZIP codes nearest 58631

The ZIP codes whose reference points sit closest to 58631.
ZIP code	Distance	Delivers to
ZIP code 58638	11 mi	Hebron, ND
ZIP code 58520	16 mi	Almont, ND
ZIP code 58563	19 mi	New Salem, ND
ZIP code 58652	22 mi	Richardton, ND
ZIP code 58656	27 mi	Taylor, ND
ZIP code 58529	28 mi	Carson, ND
ZIP code 58535	29 mi	Flasher, ND
ZIP code 58523	31 mi	Beulah, 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 58631, plotted from its record coordinates.

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

Scope ZIP code 58631. 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.