| Zip Code | City | Population ↓ |
|---|---|---|
| 76645 | Hillsboro | 11,494 |
| 76692 | Whitney | 9,853 |
| 76055 | Itasca | 3,577 |
| 76648 | Hubbard | 2,777 |
| 76636 | Covington | 1,748 |
| 76627 | Blum | 1,736 |
| 76622 | Aquilla | 1,447 |
| 76673 | Mount Calm | 1,196 |
| 76621 | Abbott | 1,104 |
| 76660 | Malone | 572 |
| 76631 | Bynum | 455 |
| 76676 | Penelope | 344 |
| 76666 | Mertens | 261 |
| 76650 | Irene | 55 |
| 76628 | Brandon | 50 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 15 ZCTAs in Hill County, Texas (US Census).