Round Mountain, TX ZIP code
The ZIP code for Round Mountain, Texas is 78663. It is in Blanco County.
- Population in these ZIPs
- 503
- Avg. median income
- $168,100population-weighted
- Typical home value
- $835,400population-weighted
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Round Mountain, TX ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 78663 | 503 | $168,125 | $835,400 |
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 near Round Mountain
- Horseshoe Bay 9 mi
- Johnson City 10 mi
- Spicewood 11 mi
- Marble Falls 12 mi
- Dripping Springs 17 mi
- Kingsland 19 mi
- Hye 20 mi
- Stonewall 23 mi
- Willow City 24 mi
- Blanco 24 mi
- Buchanan Dam 24 mi
- Leander 25 mi
Frequently asked questions
What is the ZIP code for Round Mountain, TX?
The ZIP code for Round Mountain, TX is 78663.
What county is Round Mountain, Texas in?
Round Mountain ZIP codes are in Blanco County.