6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lakeway | 1 | 19,149 | 19,248 | -0.1% | 1,488 | 12.87 | City |
| Briarcliff | 2 | 2,389 | 2,074 | 2.71% | 1,519 | 1.57 | Village |
| Johnson City | 3 | 2,215 | 1,769 | 4.19% | 1,135 | 1.95 | City |
| Blanco | 4 | 2,214 | 1,691 | 4.98% | 635 | 3.49 | City |
| Woodcreek | 5 | 1,923 | 1,795 | 1.37% | 1,771 | 1.09 | City |
| Round Mountain | 6 | 124 | 104 | 3.33% | 54 | 2.30 | Town |
Lakeway is the largest city in Blanco County, with a population of 19,149.
Round Mountain is the smallest city in Blanco County.
There are 6 cities in Blanco County, Texas.