ZIP code
78663
Round Mountain, TX
78663 covers Round Mountain in Blanco County, with 607 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 78663. Methodology
ZIP code map of 78663
About ZIP code 78663
Acceptable cities: Cypress Mill, Round Mtn
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 78663. Not ACS. Methodology
People in 78663
Race
- White656
- Black or African American10
- American Indian or Alaska Native10
- Asian12
- Other race36
- Two or more races91
Hispanic or Latino (any race): 131
Age
- Under 1063
- 10 to 1981
- 20 to 2945
- 30 to 3952
- 40 to 4987
- 50 to 59115
- 60 to 69207
- 70 to 79121
- 80 and older44
Income and housing in 78663
Education
- High school graduate96.7%
- Bachelor's degree31.1%
- Graduate degree3.5%
Places covering 78663
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- Round Mountain11.9%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- Blanco County86.0%
- Travis County7.2%
- Hays County4.9%
- Burnet County1.8%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
88.1% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 78663
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 522 | |
| 2006 | 490 | |
| 2007 | 548 | |
| 2008 | 522 | |
| 2009 | 502 | |
| 2010 | 522 | |
| 2011 | 720 | 545 |
| 2012 | 783 | 540 |
| 2013 | 827 | 610 |
| 2014 | 975 | 600 |
| 2015 | 750 | 620 |
| 2016 | 829 | 680 |
| 2017 | 913 | 700 |
| 2018 | 846 | 690 |
| 2019 | 873 | 730 |
| 2020 | 782 | 790 |
| 2021 | 696 | 820 |
| 2022 | 599 | 830 |
| 2023 | 607 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 78663
12 nearest ZIP centroids (any distance)
- 78657Horseshoe Bay9.1 miPop 7,061 · Income $93,699
- 78636Johnson City9.6 miPop 3,842 · Income $59,625
- 78669Spicewood11.4 miPop 11,980 · Income $126,422
- 78654Marble Falls12.4 miPop 19,946 · Income $72,669
- 78620Dripping Springs16.8 miPop 20,624 · Income $146,551
- 78639Kingsland18.7 miPop 8,517 · Income $57,034
- 78635Hye20.1 miPop 83 · Income —
- 78645Leander20.4 miPop 15,042 · Income $108,393
- 78738Austin20.7 miPop 28,790 · Income $169,911
- 78734Austin21.8 miPop 22,091 · Income $129,116
- 78671Stonewall23.3 miPop 399 · Income $34,522
- 78675Willow City23.6 miPop 158 · Income $37,500
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 78663, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 78663 FAQ
- What city is ZIP code 78663 in?
- 78663 is in Round Mountain, TX.
- What county is 78663 in?
- 78663 is in Blanco County.
- What is the median household income in 78663?
- The median household income in 78663 is $156,829.
- Which ZIP codes are near 78663?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 78663.