| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Marble Falls | 1 | 10,221 | 7,079 | 6.1% | 618 | 17 | City |
| Burnet | 2 | 7,041 | 6,464 | 1.47% | 671 | 10 | City |
| Granite Shoals | 3 | 5,567 | 5,154 | 1.26% | 788 | 7 | City |
| Bertram | 4 | 2,235 | 1,646 | 4.34% | 1,189 | 2 | City |
| Meadowlakes | 5 | 1,820 | 1,890 | -0.6% | 2,427 | 1 | City |
| Cottonwood Shores | 6 | 1,764 | 1,428 | 3.7% | 1,647 | 1 | City |
| Highland Haven | 7 | 405 | 419 | -0.49% | 918 | 0 | City |
| Double Horn | 8 | 294 | 263 | 1.73% | 150 | 2 | City |
Marble Falls is the largest city in Burnet County, with a population of 10,221.
Double Horn is the smallest city in Burnet County, with a population of 294.
There are 8 cities in Burnet County, Texas.