| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jacksboro | 1 | 4,860 | 4,175 | 2.64% | 672 | 7 | City |
| Bryson | 2 | 483 | 428 | 1.9% | 367 | 1 | City |
| Lake Bridgeport | 3 | 406 | 338 | 2.78% | 869 | 0 | City |
Jacksboro is the largest city in Jack County, with a population of 4,860.
Lake Bridgeport is the smallest city in Jack County, with a population of 406.
There are 3 cities in Jack County, Texas.