20 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 76706 | Waco | 40,668 |
| 76705 | Waco | 31,750 |
| 76712 | Woodway | 28,719 |
| 76708 | Waco | 27,679 |
| 76710 | Waco | 23,270 |
| 76707 | Waco | 16,602 |
| 76643 | Hewitt | 16,244 |
| 76657 | Mcgregor | 12,770 |
| 76711 | Waco | 9,631 |
| 76655 | Lorena | 9,572 |
| 76704 | Waco | 7,387 |
| 76691 | West | 6,288 |
| 76633 | China Spring | 6,037 |
| 76638 | Crawford | 3,395 |
| 76640 | Elm Mott | 2,958 |
| 76798 | Waco | 2,903 |
| 76624 | Axtell | 2,679 |
| 76701 | Waco | 1,732 |
| 76630 | Bruceville | 1,688 |
| 76654 | Leroy | 168 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 20 ZCTAs in McLennan County, Texas (US Census).