16 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Waco | 1 | 147,666 | 140,541 | 0.97% | 1,623 | 91 | City |
| Hewitt | 2 | 17,104 | 16,071 | 1.23% | 2,484 | 6.89 | City |
| Bellmead | 3 | 10,692 | 10,511 | 0.34% | 1,549 | 6.90 | City |
| Woodway | 4 | 9,852 | 9,422 | 0.88% | 1,496 | 6.59 | City |
| Lacy-Lakeview | 5 | 7,373 | 7,213 | 0.44% | 1,694 | 4.35 | City |
| West | 6 | 2,608 | 2,553 | 0.42% | 1,528 | 1.71 | City |
| Willow Grove | 7 | 2,606 | 1,992 | 7.16% | 505 | 5.16 | CDP |
| Mart | 8 | 1,892 | 1,784 | 1.18% | 1,374 | 1.38 | City |
| Beverly Hills | 9 | 1,862 | 1,874 | -0.11% | 2,830 | 0.66 | City |
| Lorena | 10 | 1,816 | 1,783 | 0.39% | 471 | 3.85 | City |
| Moody | 11 | 1,659 | 1,556 | 1.28% | 1,191 | 1.39 | City |
| China Spring | 12 | 1,445 | 1,264 | 0.77% | 313 | 4.62 | CDP |
| Riesel | 13 | 1,072 | 1,047 | 0.47% | 257 | 4.16 | City |
| Crawford | 14 | 947 | 892 | 1.18% | 657 | 1.44 | Town |
| Leroy | 15 | 361 | 358 | 0.28% | 195 | 1.85 | City |
| Ross | 16 | 207 | 199 | 0.98% | 134 | 1.54 | City |
Waco is the largest city in McLennan County, with a population of 147,666.
Ross is the smallest city in McLennan County.
There are 16 cities in McLennan County, Texas.