16 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 78521 | Brownsville | 87,860 |
| 78520 | Brownsville | 63,337 |
| 78526 | Brownsville | 59,719 |
| 78550 | Harlingen | 54,169 |
| 78586 | San Benito | 49,103 |
| 78552 | Harlingen | 41,277 |
| 78566 | Los Fresnos | 24,927 |
| 78559 | La Feria | 12,752 |
| 78578 | Port Isabel | 10,231 |
| 78583 | Rio Hondo | 5,472 |
| 78593 | Santa Rosa | 5,030 |
| 78575 | Olmito | 4,728 |
| 78597 | South Padre Island | 2,881 |
| 78592 | Santa Maria | 600 |
| 78535 | Combes | 435 |
| 78567 | Los Indios | 405 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 16 ZCTAs in Cameron County, Texas (US Census).