ZIP 78665 · Round Rock
Who lives in ZIP code 78665 (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
People66,171
Median age35.5
Household income$122,680
Home value$473,479
Median rent$1,938/mo
Poverty4.7%
College degree+53.5%
Commute28 min
Place
- Metro area
- Austin-Round Rock-San Marcos, TX
- Time zone
- Central
- Density
- 1,061 / sq mi
- Housing units
- 24,162
County
Share of the ZIP's people in each county.
Age mix
10.4% are 65 or older; 74.5% are adults.
Household income
59.3% of households earn $100K+. Median per person: $57,649.
Education (adults 25+)
49.5% of degrees are in STEM fields.
Race
24.3% Hispanic or Latino (of any race).
Households & family
- Married
- 55.6%
- Never married
- 30.2%
- Divorced
- 10.8%
- Widowed
- 3.5%
- Family size
- 3.20
- Dual-income families
- 63.6%
Housing
- Own their home
- 61.4%
- Rent burden
- 29.5%
- Men / women
- 50% / 50%
Work
- In labor force
- 73.2%
- Unemployment
- 3.4%
- Self-employed
- 12.7%
- Farmers
- 0.3%
Community
- Charitable givers
- 30.6%
- Veterans
- 7.9%
- With a disability
- 12.1%
- No health insurance
- 6.7%
- Limited English
- 2.8%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.