ZIP Code 51011

51011 is one of Iowa's ZIP codes, delivering to addresses in Chatsworth, Sioux County.

City: Chatsworth
County: Sioux County
State: Iowa
Prefix: 510xx

Where this code sits

51011 is part of the 510xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Chatsworth.

Chatsworth Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 51011 delivers to without sharing its boundary.

712 Area code 712

ZIP codes nearest 51011

The ZIP codes whose reference points sit closest to 51011.
ZIP code	Distance	Delivers to
ZIP code 51001	5.6 mi	Akron, IA
ZIP code 51023	6.2 mi	Hawarden, IA
ZIP code 57001	8.6 mi	Alcester, SD
ZIP code 51027	10 mi	Ireton, IA
ZIP code 57034	15 mi	Hudson, SD
ZIP code 51008	15 mi	Brunsville, IA
ZIP code 57025	15 mi	Elk Point, SD
ZIP code 51062	15 mi	Westfield, IA

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 51011, plotted from its record coordinates.

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

Scope ZIP code 51011. 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.