ZIP Code 58503

58503 is one of North Dakota's ZIP codes, delivering to addresses in Bismarck, Burleigh County.

City: Bismarck
County: Burleigh County
State: North Dakota
Prefix: 585xx

Where this code sits

58503 is part of the 585xx range, the group of codes handled by one mail processing centre. Bismarck is served by 7 ZIP codes in total; the full list, with the county each falls in, is on the Bismarck page.

Bismarck North Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 58503 delivers to without sharing its boundary.

701 Area code 701

ZIP codes nearest 58503

The ZIP codes whose reference points sit closest to 58503.
ZIP code	Distance	Delivers to
ZIP code 58505	1.6 mi	Bismarck, ND
ZIP code 58501	2.1 mi	Bismarck, ND
ZIP code 58506	2.1 mi	Bismarck, ND
ZIP code 58507	2.1 mi	Bismarck, ND
ZIP code 58502	5.9 mi	Bismarck, ND
ZIP code 58554	5.9 mi	Mandan, ND
ZIP code 58521	8.0 mi	Baldwin, ND
ZIP code 58504	9.5 mi	Bismarck, 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 58503, plotted from its record coordinates.

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

Scope ZIP code 58503. 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.