Iowa City, IA ZIP Codes, Area Codes and Address Format

City guides  |  July 6, 2026  |  2 min read

This guide covers Iowa City, IA: its ZIP codes, area codes, county and time zone, with sample addresses you can copy for testing.

State

Iowa (IA)

County

Johnson County

Standard ZIP codes

4

Time zone

Central

Iowa City ZIP codes

These are the standard delivery ZIP codes for Iowa City. The city has 6 ZIP codes in total when PO Box and unique codes are included.

• 52240
• 52242
• 52245
• 52246

Area codes in Iowa City

Iowa City phone numbers use 319. A single area code keeps local numbers easy to recognize.

Sample Iowa City addresses

The street lines are invented; the city, state and ZIP codes are real. Use them for form testing, mockups and training materials, never for real orders.

How to write an address in Iowa City

• End the address with IOWA CITY, IA and the five-digit ZIP code.
• Put apartment or suite numbers at the end of the street line.
• Use USPS abbreviations such as ST, AVE and BLVD.
• Match the ZIP code to the street. Iowa City has 4 codes, so the city name alone is not enough.

More Iowa cities

Des Moines, Ames, Council Bluffs, West Des Moines, Dubuque, or see all Iowa cities.