Johnson County, IA ZIP codes
Johnson County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Johnson County ZIP codes
The ZIP codes of Johnson County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Johnson County in numbers
About 156,639 people live in Johnson County, in 63,341 households, the 4th most populous of Iowa's 99 counties. The median household income is $74,935 a year, about the same as the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $308,600 (48% above the Iowa median), and median gross rent is $1,122 a month. The median age is 31.0; 55.2% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 19 minutes.
| Population | 156,639 |
|---|---|
| Households | 63,341 |
| Median age | 31.0 |
| Median household income | $74,935 |
| Median home value | $308,600 |
| Median gross rent | $1,122 |
| Bachelor's degree or higher | 55.2% |
| Mean commute | 19.4 min |
| Population density | 256 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Johnson County
| Town | ZIP codes | Population |
|---|---|---|
| Iowa City | 6 | 75,752 |
| Coralville | 1 | 23,234 |
| North Liberty | 1 | 21,125 |
| Tiffin | 1 | 5,737 |
| Solon | 1 | 3,152 |
| Kalona | 1 | 2,692 |
| Lone Tree | 1 | 1,218 |
| Swisher | 1 | 1,182 |
| Hills | 1 | 974 |
| Oxford | 1 | 779 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Johnson County.
- Linn County (30)
- Muscatine County (9)
- Benton County (16)
- Washington County (7)
- Jones County (11)
- Cedar County (9)
- Iowa County (13)
- Louisa County (6)
- Keokuk County (14)
Not sure you are in Johnson County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Johnson County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
52235 | Hills , IA | Standard | 974 | $83,333 | $240,200 |
52240 | Iowa City , IA | Standard | 35,074 | $52,960 | $242,300 |
52241 | Coralville , IA | Standard | 23,250 | $69,243 | $298,900 |
52242 | Iowa City , IA | Standard | 4,688 | — | — |
52243 | Iowa City , IA | No street area | — | — | — |
52244 | Iowa City , IA | No street area | — | — | — |
52245 | Iowa City , IA | Standard | 22,853 | $78,020 | $315,100 |
52246 | Iowa City , IA | Standard | 22,308 | $62,521 | $348,900 |
52247 | Kalona , IA | Standard | 5,914 | $91,450 | $298,900 |
52317 | North Liberty , IA | Standard | 23,097 | $105,318 | $322,800 |
52322 | Oxford , IA | Standard | 2,266 | $64,444 | $261,100 |
52333 | Solon , IA | Standard | 7,295 | $118,721 | $366,900 |
52338 | Swisher , IA | Standard | 3,934 | $119,605 | $392,700 |
52340 | Tiffin , IA | Standard | 6,128 | $98,393 | $342,800 |
52755 | Lone Tree , IA | Standard | 2,092 | $102,434 | $242,700 |
Cite this page
zipcodes.pro. “Johnson County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ia/county/johnson
Underlying data is public domain or openly licensed — sources, vintages and licences.