ZIP CodesZIP codes in Cerro Gordo County, Iowa
Cerro Gordo County, Iowa has 11 ZIP codes in this list, from 50401 to 50482. They cover 10 places, among them Mason City, Clear Lake, Dougherty and Meservey.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 50401 | Mason City | 148 | 43.150, -93.195 |
| 50402 | Mason City | no area | 43.154, -93.201 |
| 50428 | Clear Lake | 117 | 43.141, -93.385 |
| 50433 | Dougherty | 47.5 | 42.922, -93.042 |
| 50457 | Meservey | 34.0 | 42.914, -93.477 |
| 50464 | Plymouth | 24.5 | 43.246, -93.123 |
| 50467 | Rock Falls | 1.1 | 43.207, -93.086 |
| 50469 | Rockwell | 86.6 | 43.003, -93.217 |
| 50477 | Swaledale | 18.9 | 42.962, -93.311 |
| 50479 | Thornton | 58.2 | 42.968, -93.409 |
| 50482 | Ventura | 30.0 | 43.126, -93.471 |
The ZIP code areas of Cerro Gordo County add up to about 566 square miles of land (1,467 sq km) as the Census Bureau draws them. The largest is 50401 (Mason City), with 148 square miles.
Places with more than one code here: Mason City (2 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Mason City, IA 50401.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.