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ZIP 78681 · Round Rock

Who lives in ZIP code 78681 (Round Rock, TX): age, income, housing, education and work.

Source: uszips 2026 (ACS-based ZIP file)

2026 ZIP profile

Round Rock, TX · Williamson County

uszips 2026
People56,691
Median age39.3
Household income$137,819
Home value$505,140
Median rent$1,963/mo
Poverty5.5%
College degree+58.0%
Commute24 min

Place

Metro area
Austin-Round Rock-San Marcos, TX
Time zone
Central
Density
944 / sq mi
Housing units
20,135

County

Williamson100%

Share of the ZIP's people in each county.

Age mix

Under 1012.9%
10–1916.7%
20s8.2%
30s13.5%
40s18.8%
50s13.4%
60s8.9%
70s5.6%
80+2.1%

11.3% are 65 or older; 73.3% are adults.

Household income

Under $25K6.8%
$25K–50K7.4%
$50K–75K11.0%
$75K–100K9.5%
$100K–150K20.1%
$150K+45.2%

65.3% of households earn $100K+. Median per person: $60,305.

Education (adults 25+)

Less than high school4.1%
High school12.2%
Some college25.7%
Bachelor's36.4%
Graduate21.6%

51.3% of degrees are in STEM fields.

Race

White61.8%
Black4.6%
Asian13.0%
Native American0.5%
Pacific Islander0.1%
Other4.7%
Two or more15.4%

22.0% Hispanic or Latino (of any race).

Households & family

Married
58.2%
Never married
27.8%
Divorced
11.2%
Widowed
2.8%
Family size
3.23
Dual-income families
62.3%

Housing

Own their home
73.9%
Rent burden
27.7%
Men / women
51% / 49%

Work

In labor force
71.1%
Unemployment
3.0%
Self-employed
14.3%
Farmers
0.6%

Community

Charitable givers
34.2%
Veterans
6.5%
With a disability
8.1%
No health insurance
7.5%
Limited English
4.0%

Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.

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