ZIP Code 72170

72170 is one of Arkansas's ZIP codes, delivering to addresses in Ulm, Prairie County.

City: Ulm
County: Prairie County
State: Arkansas
Prefix: 721xx

Where this code sits

72170 is part of the 721xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Ulm.

Ulm Arkansas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 72170 delivers to without sharing its boundary.

ZIP codes nearest 72170

The ZIP codes whose reference points sit closest to 72170.
ZIP code	Distance	Delivers to
ZIP code 72134	6.1 mi	Roe, AR
ZIP code 72160	8.0 mi	Stuttgart, AR
ZIP code 72026	11 mi	Casscoe, AR
ZIP code 72003	11 mi	Almyra, AR
ZIP code 72041	12 mi	De Valls Bluff, AR
ZIP code 72029	13 mi	Clarendon, AR
ZIP code 72038	14 mi	Crocketts Bluff, AR
ZIP code 72064	16 mi	Hazen, AR

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 72170, plotted from its record coordinates.

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

Scope ZIP code 72170. 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.