ZIP Code 52640

52640 is one of Iowa's ZIP codes, delivering to addresses in Morning Sun, Louisa County.

City: Morning Sun
County: Louisa County
State: Iowa
Prefix: 526xx

Where this code sits

52640 is part of the 526xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Morning Sun.

Morning Sun Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 52640 delivers to without sharing its boundary.

319 Area code 319

ZIP codes nearest 52640

The ZIP codes whose reference points sit closest to 52640.
ZIP code	Distance	Delivers to
ZIP code 52660	8.3 mi	Yarmouth, IA
ZIP code 52653	8.7 mi	Wapello, IA
ZIP code 52644	9.1 mi	Mount Union, IA
ZIP code 52637	9.2 mi	Mediapolis, IA
ZIP code 52659	9.5 mi	Winfield, IA
ZIP code 52646	11 mi	Oakville, IA
ZIP code 52650	12 mi	Sperry, IA
ZIP code 52737	13 mi	Columbus City, 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 52640, plotted from its record coordinates.

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

Scope ZIP code 52640. 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.