Johnston, IA ZIP code
The ZIP code for Johnston, Iowa is 50131. It is in Polk County.
- Population in these ZIPs
- 24,583
- Avg. median income
- $106,600population-weighted
- Typical home value
- $401,300population-weighted
- Metro area
- Des Moines-West Des Moines, IA
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Johnston, IA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 50131 | 24,583 | $106,551 | $401,300 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Johnston
- Grimes 4 mi
- Urbandale 5 mi
- Windsor Heights 6 mi
- Granger 7 mi
- Ankeny 7 mi
- Polk City 7 mi
- Clive 7 mi
- Des Moines 8 mi
- Berwick 9 mi
- Alleman 10 mi
- Waukee 10 mi
- West Des Moines 10 mi
Frequently asked questions
What is the ZIP code for Johnston, IA?
The ZIP code for Johnston, IA is 50131.
What county is Johnston, Iowa in?
Johnston ZIP codes are in Polk County.