Founded in 1856, Llano County is one of 254 counties in the state of Texas. Historically, Llano County was formed from Bexar County, Gillespie County. The city of Llano is the county seat. With FIPS code of 299, Llano County has a population of 21,978 and area of 935 square miles (2,422 km2).
List of all cities in Llano County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Bluffton, TX | 78607 | 325 |
| Buchanan Dam, TX | 78609 | 512/737 |
| Castell, TX | 76831 | 325 |
| Cottonwd Shrs, TX | 78657 | 830 |
| Cottonwood Shores, TX | 78657 | 830 |
| Granite Shoals Lake Shores, TX | 78639 | 325 |
| Horseshoe Bay, TX | 78657 | 830 |
| Inks Lake Village, TX | 78609 | 512/737 |
| Kingsland, TX | 78639 | 325 |
| Lakeside Heights, TX | 78639 | 325 |
| Llano, TX | 78643 | 325 |
| Marble Falls, TX | 78657 | 830 |
| Sunrise Beach, TX | 78643 | 325 |
| Tow, TX | 78672 | 325 |
| Valley Spring, TX | 76885 | 325 |