ZIP Code 52340

52340 is one of Iowa's ZIP codes, delivering to addresses in Tiffin, Johnson County.

City: Tiffin
County: Johnson County
State: Iowa
Prefix: 523xx

Where this code sits

52340 is part of the 523xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Tiffin.

Tiffin Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 52340 delivers to without sharing its boundary.

319 Area code 319

ZIP codes nearest 52340

The ZIP codes whose reference points sit closest to 52340.
ZIP code	Distance	Delivers to
ZIP code 52241	4.5 mi	Coralville, IA
ZIP code 52317	4.7 mi	North Liberty, IA
ZIP code 52322	6.0 mi	Oxford, IA
ZIP code 52246	7.0 mi	Iowa City, IA
ZIP code 52242	7.2 mi	Iowa City, IA
ZIP code 52243	8.1 mi	Iowa City, IA
ZIP code 52338	8.6 mi	Swisher, IA
ZIP code 52245	8.7 mi	Iowa 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 52340, plotted from its record coordinates.

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

Scope ZIP code 52340. 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.