Postal reference / United States
50402Mason City, Iowa
ZIP code 50402 is a United States postal code for Mason City, Iowa. Its county association is Cerro Gordo County. The map reference point is at 43.1536, -93.201.
- State / territory
- Iowa
- Recorded place name
- Mason City
- County association
- Cerro Gordo
- Estimated coordinate
- 43.1536, -93.201
View on OpenStreetMap - ZIP prefix
- 504 · 57 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
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Iowa directoryOther ZIP codes in Mason City, IA
Mason City has 2 ZIP codes in the reference dataset.
- 50401Cerro Gordo
Nearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 50401 | Mason City | IA | Cerro Gordo | 0.4 |
| 50467 | Rock Falls | IA | Cerro Gordo | 6.9 |
| 50464 | Plymouth | IA | Cerro Gordo | 7.5 |
| 50428 | Clear Lake | IA | Cerro Gordo | 9.3 |
| 50456 | Manly | IA | Worth | 9.4 |
| 50458 | Nora Springs | IA | Floyd | 10.1 |
| 50469 | Rockwell | IA | Cerro Gordo | 10.4 |
| 50440 | Grafton | IA | Worth | 12.5 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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