ZIP Code 52237

52237 is one of Iowa's ZIP codes, delivering to addresses in Hopkinton, Delaware County.

City: Hopkinton
County: Delaware County
State: Iowa
Prefix: 522xx

Where this code sits

52237 is part of the 522xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hopkinton.

Hopkinton Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 52237 delivers to without sharing its boundary.

563 Area code 563

ZIP codes nearest 52237

The ZIP codes whose reference points sit closest to 52237.
ZIP code	Distance	Delivers to
ZIP code 52223	7.4 mi	Delhi, IA
ZIP code 52078	7.9 mi	Worthington, IA
ZIP code 52310	7.9 mi	Monticello, IA
ZIP code 52036	9.9 mi	Delaware, IA
ZIP code 52252	10 mi	Langworthy, IA
ZIP code 52041	11 mi	Earlville, IA
ZIP code 52219	12 mi	Prairieburg, IA
ZIP code 52040	12 mi	Dyersville, 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 52237, plotted from its record coordinates.

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

Scope ZIP code 52237. 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.