Llano County, Texas ZIP codes
8 ZIP codes are in Llano County, plus 2 that cross in from neighboring counties.
- ZIP codes
- 8
- Population in these ZIPs
- 26,211
- Avg. median income
- $70,900population-weighted
- Cities & towns
- 8
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ZIP codes in Llano County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 76831 | Castell | 0 | — | — |
| 76885 | Valley Spring | 142 | — | $787,200 |
| 78607 | Bluffton | 118 | $58,594 | $243,800 |
| 78609 | Buchanan Dam | 1,983 | $64,418 | $355,000 |
| 78639 | Kingsland | 8,719 | $57,742 | $428,400 |
| 78643 | Llano | 7,088 | $68,365 | $349,400 |
| 78657 | Horseshoe Bay | 7,591 | $91,452 | $627,700 |
| 78672 | Tow | 570 | $52,813 | $232,800 |
ZIP codes partly in Llano County
These ZIP codes are mostly in a neighboring county but cover part of Llano County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 76869 | Pontotoc | San Saba County | 0 | — | — |
| 78611 | Burnet | Burnet County | 14,560 | $80,938 | $394,300 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Llano County
Nearby counties
Frequently asked questions
How many ZIP codes are in Llano County, Texas?
8 ZIP codes are mainly in Llano County, and 2 more ZIP codes from neighboring areas reach partly into it.
What cities are in Llano County?
ZIP codes in Llano County use the city names Bluffton, Buchanan Dam, Castell, Horseshoe Bay, Kingsland, Llano, Tow and Valley Spring.