ZIP code
78681
Round Rock, TX
78681 covers Round Rock in Williamson County, with 58,531 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 78681. Methodology
ZIP code map of 78681
About ZIP code 78681
Acceptable cities: Austin
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 78681. Not ACS. Methodology
People in 78681
Race
- White35,301
- Black or African American3,043
- American Indian or Alaska Native320
- Asian7,310
- Native Hawaiian and Pacific Islander36
- Other race3,377
- Two or more races8,116
Hispanic or Latino (any race): 11,798
Age
- Under 107,426
- 10 to 1910,245
- 20 to 295,365
- 30 to 397,484
- 40 to 4910,116
- 50 to 597,739
- 60 to 694,943
- 70 to 793,070
- 80 and older1,115
Income and housing in 78681
Education
- High school graduate95.3%
- Bachelor's degree56.5%
- Graduate degree20.5%
Places covering 78681
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 Rock57.1%
- Brushy Creek25.7%
- Austin0.0%
- Georgetown0.0%
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.
- Williamson County100.0%
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
17.2% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 78681
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 43,808 | |
| 2006 | 44,454 | |
| 2007 | 46,894 | |
| 2008 | 47,143 | |
| 2009 | 49,230 | |
| 2010 | 50,369 | |
| 2011 | 51,409 | 50,840 |
| 2012 | 53,229 | 51,290 |
| 2013 | 54,141 | 52,150 |
| 2014 | 54,517 | 52,740 |
| 2015 | 54,923 | 53,580 |
| 2016 | 56,086 | 53,440 |
| 2017 | 57,234 | 53,770 |
| 2018 | 56,959 | 54,030 |
| 2019 | 58,155 | 54,590 |
| 2020 | 58,983 | 53,710 |
| 2021 | 57,451 | 52,730 |
| 2022 | 57,760 | 52,740 |
| 2023 | 58,531 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 78681
12 nearest ZIP centroids (any distance)
- 78717Austin4.2 miPop 36,085 · Income $140,483
- 78665Round Rock4.8 miPop 64,087 · Income $117,240
- 78664Round Rock4.8 miPop 62,272 · Income $85,919
- 78729Austin6.3 miPop 30,440 · Income $81,589
- 78728Austin6.3 miPop 26,776 · Income $74,048
- 78613Cedar Park6.6 miPop 89,162 · Income $120,829
- 78727Austin7.8 miPop 30,894 · Income $107,194
- 78750Austin8.1 miPop 29,322 · Income $123,722
- 78628Georgetown9.2 miPop 44,821 · Income $117,198
- 78626Georgetown9.9 miPop 45,020 · Income $94,967
- 78759Austin10.0 miPop 44,882 · Income $102,799
- 78660Pflugerville10.1 miPop 118,437 · Income $109,522
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 78681, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 78681 FAQ
- What city is ZIP code 78681 in?
- 78681 is in Round Rock, TX.
- What county is 78681 in?
- 78681 is in Williamson County.
- What is the median household income in 78681?
- The median household income in 78681 is $136,215.
- Which ZIP codes are near 78681?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 78681.