ZIP code · Johnston · Iowa · United States
ZIP code 50131 — Johnston
ZIP code 50131 serves Johnston, Iowa.
- Postal code
- 50131Single source Value from one source, not cross-checked.
- City
- Johnston
- County
- Polk FIPS 19153
- State
- Iowa
- Country
- United States
- Coordinates
- 41.6730, -93.7028 — precision precise (locality)
View on OpenStreetMap - Population
- 24,388 (ZCTA, ACS 5-year)
- Population density
- 1,029 / sq mi
- Land area
- 23.7 sq mi (61.4 km²) (ZCTA, ACS 5-year)
- Median household income
- $103,316
- Per-capita income
- $56,708
- Median age
- 38.5
- Households
- 9,659
- Housing units
- 9,975
- Median home value
- $347,100
- Median gross rent
- $1,284 / month
- Congressional district
- IA-3 (119th Congress)
- USDA hardiness zone
- 5b (-15 to -10 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 319 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 50131 with another ZIP · ZIPs within 25 miles · distance from 50131
Map of ZIP code 50131
Climate — monthly normals
Warmest month Jul (avg high 85°F), coldest Jan (avg low 13°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 30 | 35 | 49 | 62 | 72 | 81 | 85 | 83 | 76 | 63 | 48 | 35 |
| Avg low °F | 13 | 17 | 29 | 40 | 52 | 62 | 66 | 64 | 55 | 43 | 30 | 19 |
| Precip in | 1.0 | 1.3 | 2.1 | 4.0 | 4.8 | 5.3 | 4.3 | 4.0 | 3.4 | 2.5 | 1.9 | 1.5 |
NOAA 1991–2020 climate normals from the nearest station: DES MOINES WSFO-JOHNSTON (4.5 mi) · NOAA NCEI
Places in ZIP 50131
- 20 schools
- 4 hospitals & clinics
- 5 doctors & dentists
- 2 pharmacies
- 2 supermarkets
- 32 restaurants & cafés
- 8 bars & pubs
- 24 parks
- 48 playgrounds
- 11 gyms & sports centres
- 1 libraries
- 2 post offices
- 13 places of worship
- 9 banks
- 8 gas stations
- 2 EV charging stations
- 4 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page