ZIP code · Mason City · Iowa · United States
ZIP code 50401 — Mason City
ZIP code 50401 serves Mason City, Iowa.
- Postal code
- 50401Single source Value from one source, not cross-checked.
- City
- Mason City
- County
- Cerro Gordo FIPS 19033
- State
- Iowa
- Country
- United States
- Coordinates
- 43.1499, -93.1954 — precision precise (locality)
View on OpenStreetMap - Population
- 28,818 (ZCTA, ACS 5-year)
- Population density
- 194 / sq mi
- Land area
- 148.2 sq mi (383.8 km²) (ZCTA, ACS 5-year)
- Median household income
- $63,807
- Per-capita income
- $36,860
- Median age
- 42.5
- Households
- 13,298
- Housing units
- 14,746
- Median home value
- $134,100
- Median gross rent
- $868 / month
- Congressional district
- IA-2 (119th Congress)
- USDA hardiness zone
- 5a (-20 to -15 °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
- 641Telephone 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 50401 with another ZIP · ZIPs within 25 miles · distance from 50401
Map of ZIP code 50401
Climate — monthly normals
Warmest month Jul (avg high 82°F), coldest Jan (avg low 7°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 24 | 29 | 41 | 56 | 69 | 79 | 82 | 80 | 74 | 60 | 43 | 30 |
| Avg low °F | 7 | 11 | 23 | 35 | 47 | 58 | 62 | 59 | 50 | 38 | 25 | 14 |
| Precip in | 0.9 | 1.1 | 1.9 | 3.9 | 5.6 | 5.7 | 4.6 | 3.7 | 3.2 | 2.5 | 1.8 | 1.3 |
NOAA 1991–2020 climate normals from the nearest station: MASON CITY (0.9 mi) · NOAA NCEI
Places in ZIP 50401
- 12 schools
- 2 colleges & universities
- 7 hospitals & clinics
- 4 doctors & dentists
- 3 pharmacies
- 7 supermarkets
- 35 restaurants & cafés
- 5 bars & pubs
- 33 parks
- 16 playgrounds
- 5 gyms & sports centres
- 1 libraries
- 1 post offices
- 52 places of worship
- 10 banks
- 13 gas stations
- 1 EV charging stations
- 3 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