20 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 76706 | Waco | 41,627 |
| 76705 | Waco | 31,616 |
| 76712 | Woodway | 29,118 |
| 76708 | Waco | 27,790 |
| 76710 | Waco | 23,329 |
| 76643 | Hewitt | 16,432 |
| 76707 | Waco | 15,879 |
| 76657 | Mcgregor | 12,760 |
| 76655 | Lorena | 10,603 |
| 76711 | Waco | 9,676 |
| 76704 | Waco | 7,018 |
| 76691 | West | 6,661 |
| 76633 | China Spring | 6,268 |
| 76638 | Crawford | 3,671 |
| 76640 | Elm Mott | 3,089 |
| 76798 | Waco | 2,883 |
| 76624 | Axtell | 2,660 |
| 76701 | Waco | 1,871 |
| 76630 | Bruceville | 1,589 |
| 76654 | Leroy | 175 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 20 ZCTAs in McLennan County, Texas (US Census).