Iowa City Iowa ZIP Codes

Iowa City holds 6 ZIP codes, all inside one county and one postal prefix.

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Iowa City codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Iowa City. 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.

Every Iowa City ZIP code begins 522. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 50 ZIP codes, so Iowa City accounts for 12% of it.

Every Iowa ZIP prefix and the region it covers →

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

• 319 Area code 319

Iowa City Iowa area codes in full →

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