6 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 78580 | Raymondville | 12,964 |
| 78569 | Lyford | 4,342 |
| 78561 | Lasara | 1,457 |
| 78594 | Sebastian | 1,206 |
| 78590 | San Perlita | 428 |
| 78598 | Port Mansfield | 245 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 6 ZCTAs in Willacy County, Texas (US Census).