Chester Iowa ZIP Codes

Chester holds a single ZIP code.

Every ZIP code in Chester

The complete list of Chester, Iowa ZIP codes with the county each falls in.
ZIP code	County
52134	Howard County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Chester codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Chester. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Chester ZIP code begins 521. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 33 ZIP codes, so Chester accounts for 3% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Chester

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Chester occupies.

Chester Iowa area codes in full →

Where Chester's ZIP codes sit

Each point is one Chester ZIP code, plotted from its record coordinates.

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

Cities near Chester

The closest places to Chester with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Lime Springs Iowa ZIP codes	4.9 mi	1 ZIP code
Riceville Iowa ZIP codes	13 mi	1 ZIP code
Cresco Iowa ZIP codes	15 mi	1 ZIP code
Elma Iowa ZIP codes	17 mi	1 ZIP code
Alta Vista Iowa ZIP codes	21 mi	1 ZIP code
Stacyville Iowa ZIP codes	21 mi	1 ZIP code
Ridgeway Iowa ZIP codes	23 mi	1 ZIP code
Protivin Iowa ZIP codes	24 mi	1 ZIP code

Straight-line distance between place reference points, not driving distance.