| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Weatherford | 1 | 42,728 | 31,160 | 5.15% | 1,451 | 29 | City |
| White Settlement | 2 | 17,896 | 18,268 | -0.2% | 3,553 | 5 | City |
| Azle | 3 | 15,767 | 13,423 | 2.62% | 1,791 | 9 | City |
| Willow Park | 4 | 7,906 | 5,391 | 6.28% | 1,229 | 6 | City |
| Aledo | 5 | 7,550 | 4,938 | 6.01% | 2,643 | 3 | City |
| Springtown | 6 | 5,639 | 3,091 | 8.36% | 1,857 | 3 | City |
| Reno | 7 | 4,000 | 2,922 | 4.63% | 303 | 13 | City |
| Annetta | 8 | 3,647 | 3,071 | 2.85% | 971 | 4 | Town |
| Pelican Bay | 9 | 2,872 | 2,164 | 5.24% | 4,287 | 1 | City |
| Lakeside | 10 | 1,579 | 1,646 | -0.57% | 905 | 2 | Town |
| Dennis | 11 | 895 | 752 | 2.87% | 639 | 1 | Town |
| Annetta South | 12 | 721 | 609 | 2.85% | 377 | 2 | Town |
| Peaster | 13 | 654 | 552 | 2.83% | 288 | 2 | Town |
| Annetta North | 14 | 653 | 551 | 2.83% | 173 | 4 | Town |
| Millsap | 15 | 443 | 369 | 2.78% | 302 | 1 | Town |
| Sanctuary | 16 | 399 | 335 | 2.84% | 466 | 1 | Town |
Weatherford is the largest city in Parker County, with a population of 42,728.
Sanctuary is the smallest city in Parker County, with a population of 399.
There are 16 cities in Parker County, Texas.