Johnston, IA zip code
Johnston, Iowa uses one zip code: 50131. Most of it is in Polk County. Together these zip codes are home to about 25K people.
Zip codes
1
Population
25K
All zips combined
Largest zip
50131
24,583 residents
Zip codes in Johnston
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 50131 | 24,583 | $106,551 |