| ZIP Code | 78665 |
|---|---|
| City | Round Rock |
| State | Texas (TX) |
| County | Williamson County |
| Area Code | 512/737 |
| Elevation | 729 ft |
| Latitude | 30.548874 |
|---|---|
| Longitude | -97.636201 |
| Timezone | Chicago (DST) |
| FIPS | 48491 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 36.1 yrs ↑ 7% since 2019 |
|---|---|
| Avg Household Size | 2.74 |
| Below Poverty | 4.8% ▼ 52% below avg |
| College Grads | 62.0% ▲ 60% above avg |
| Unemployment | 3.3% ▼ 32% below avg |
| No HS Diploma | 297 (0.7%) |
| HS Graduate | 5,580 (13.9%) |
| Some College | 4,304 (10.7%) |
| Associates | 5,104 (12.7%) |
| Bachelors | 4,259 (10.6%) |
| Graduate Degree | 20,675 (51.4%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $117,240 ▲ 54% above avg ↑ 22% since 2019 |
|---|---|
| Median Home Value | $438,700 ▲ 57% above avg ↑ 65% since 2019 |
| Home/Income Ratio | 3.7x (nat avg ~3.5x) |
| Median Rent | $1,945/mo ↑ 30% since 2019 |
| Total Units | 24,678 |
| Vacant Units | 1,360 |
| Avg HH Size | 2.74 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 24,678 |
|---|---|
| Vacant | 1,360 |
| Owner Occupied | 63.8% |
| Renter Occupied | 36.2% |
| Avg HH Size | 2.74 |
ZIP code 78665 is located in Round Rock, Texas, within Williamson County. With a population of 64,087, this is a densely populated ZIP code with a relatively young community — the median age is 36.1 years. Economically, 78665 is a upper-middle-income ZIP code: the median household income of $117,240 is significantly above the national average.
Real estate in ZIP code 78665 represents a premium housing market. The median home value of $438,700 is significantly above the national average. Renters can expect to pay around $1,945 per month in median rent. Homeownership is strong here — 63.8% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 65% since 2019.
The population of 78665 is racially diverse, with White as the largest group at 48.6%. Residents are highly educated — 62.0% hold a bachelor's degree or higher, which is significantly above the national average. Poverty affects a relatively small share of residents at 4.8%. Household income has grown by 22% since 2019.
The unemployment rate in 78665 stands at 3.3%, which is below the national average. About 25% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 63%.
Overall, ZIP code 78665 in Round Rock, TX is characterized as upper-middle-income, highly educated, a relatively young community, and predominantly owner-occupied. With 64,087 residents, a median household income of $117,240, and a median home value of $438,700, it offers a clear picture of life in this part of Texas.