8 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 78639 | Kingsland | 8,517 |
| 78657 | Horseshoe Bay | 7,061 |
| 78643 | Llano | 6,837 |
| 78609 | Buchanan Dam | 1,826 |
| 78672 | Tow | 679 |
| 78607 | Bluffton | 228 |
| 76885 | Valley Spring | 92 |
| 76831 | Castell | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Llano County, Texas (US Census).