9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Marble Falls | 1 | 7,903 | 7,078 | 2.13% | 505 | 15.66 | City |
| Burnet | 2 | 7,247 | 6,479 | 2.17% | 691 | 10.49 | City |
| Granite Shoals | 3 | 5,651 | 5,150 | 1.8% | 800 | 7.07 | City |
| Santa Rita Ranch | 4 | 4,569 | 2,232 | 7.15% | 1,156 | 3.95 | CDP |
| Bertram | 5 | 2,339 | 1,641 | 6.37% | 1,374 | 1.70 | City |
| Meadowlakes | 6 | 1,896 | 1,888 | 0.11% | 2,528 | 0.75 | City |
| Cottonwood Shores | 7 | 1,749 | 1,429 | 3.8% | 1,633 | 1.07 | City |
| Highland Haven | 8 | 421 | 420 | 0% | 955 | 0.44 | City |
| Briggs | 9 | 69 | 97 | 7.81% | 125 | 0.55 | CDP |
Marble Falls is the largest city in Burnet County, with a population of 7,903.
Briggs is the smallest city in Burnet County.
There are 9 cities in Burnet County, Texas.