City · Texas
Round Rock, Texas
Round Rock, city, mostly in Williamson County (98.4% of its 2020 residents), with a part in Travis County, Texas. Round Rock had 141,282 residents on July 1, 2025 by the Census Bureau's estimate, up 18.2% since 2020; the 2020 Census counted 119,468 and the ACS 2020-2024 5-year estimates put it at 127,786 (±621). GEOID 4863500.
Residents, July 2025 estimate
141,282
Census Bureau estimate (no margin published)
2020 Census count: 119,468 · ACS 2020-2024: 127,786 ±621
Median household income
$99,287
±$4,128 (90% margin)
Texas: $78,476
Median home value
$418,600
±$12,497 (90% margin)
Texas: $283,800
Median gross rent
$1,763
±$38 (90% margin)
Texas: $1,403
Where is Round Rock and what county is it in?
Round Rock is a city mostly in Williamson County (98.4% of its 2020 residents), with a part in Travis County, Texas. It covers 38.1 square miles of land, 3,133 residents per square mile in 2020.
Round Rock is in the Austin-Round Rock-San Marcos, TX metropolitan statistical area, which takes in 5 counties (Census Bureau delineation, July 2023).
| County | 2020 residents | Share |
|---|---|---|
| Williamson County | 117,553 | 98.4% |
| Travis County | 1,915 | 1.6% |
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Round Rock, and is it growing?
The Census Bureau estimates that 141,282 people lived in Round Rock on July 1, 2025, up 18.2% since 2020, faster than Texas (+8.8%). The 2020 Census counted 119,468 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 127,786 (±621).
| Measure | Round Rock | Williamson County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 127,786 ±621 | 672,688 | +3,352 |
| Households | 48,647 ±1,160 | 252,323 | +9,404 |
| Average household size | 2.61 ±0.06 | 2.65 | −0.55 |
| Housing units | 51,143 ±1,128 | 262,644 | +8,581 |
Round Rock's population since 2000
From 61,136 in 2000 to 141,282 in 2025: up 131.1%. The 2000, 2010 and 2020 figures are census counts, each for Round Rock as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Round Rock?
The median resident of Round Rock is 36.2 years old; 23.5% are under 18 and 11.2% are 65 or older. The largest group is non-Hispanic white residents at 45.9%, then Hispanic or Latino residents (of any race) at 29.7%. 17.0% of residents were born outside the United States.
| Measure | Round Rock | Williamson County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 36.2 ±0.9 | 37.3 | +1.9 |
| Under 18 years | 23.5% ±1.0 pts | 24.1% | – |
| 65 years and over | 11.2% ±0.7 pts | 12.9% | – |
| Male | 49.4% ±1.0 pts | 49.8% | – |
| Hispanic or Latino (any race) | 29.7% ±1.6 pts | 24.7% | no clear change |
| White alone, not Hispanic | 45.9% ±1.7 pts | 53.3% | −4.7 pts |
| Black or African American alone, not Hispanic | 11.0% ±1.3 pts | 6.7% | no clear change |
| Asian alone, not Hispanic | 8.1% ±1.0 pts | 9.9% | +1.3 pts |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.2% ±0.2 pts | 0.1% | – |
| Two or more races, not Hispanic | 4.2% ±0.7 pts | 4.5% | – |
| Some other race alone, not Hispanic | 0.8% ±0.3 pts | 0.6% | – |
| Born outside the United States | 17.0% ±1.3 pts | 16.2% | +2.5 pts |
| Speak a language other than English at home (age 5+) | 29.2% ±1.9 pts | 25.5% | – |
| Civilian veterans (age 18+) | 7.1% ±0.9 pts | 7.6% | – |
| With a disability | 12.1% ±1.2 pts | 10.6% | – |
| No health insurance coverage | 11.9% ±1.1 pts | 9.8% | +2.5 pts |
| High school graduate or higher (age 25+) | 93.5% ±0.8 pts | 94.1% | – |
| Bachelor's degree or higher (age 25+) | 44.8% ±1.8 pts | 48.4% | +4.8 pts |
| Graduate or professional degree (age 25+) | 16.8% ±1.3 pts | 17.8% | – |
| Lived in the same house a year earlier | 80.7% ±2.0 pts | 83.9% | – |
| Moved from another state in the past year | 4.4% ±1.5 pts | 3.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Round Rock earn?
Half of Round Rock's 48,647 households earn less than $99,287 a year (±$4,128), against $111,340 in Williamson County and $78,476 in Texas. In 2015-2019 it was $101,749 in 2024 dollars; the margins of error cannot tell the two periods apart. 7.8% of residents live below the poverty line.
| Measure | Round Rock | Williamson County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $99,287 ±$4,128 | $111,340 | no clear change |
| Mean household income | $130,406 ±$5,136 | $140,407 | – |
| Per capita income | $50,365 ±$2,138 | $53,505 | +$7,580 |
| People below the poverty line | 7.8% ±1.3 pts | 6.4% | no clear change |
| Children under 18 below the poverty line | 11.2% ±3.3 pts | 7.1% | no clear change |
| Households receiving SNAP | 5.6% ±0.9 pts | 4.4% | – |
| Households with a computer | 98.3% ±0.5 pts | 98.5% | – |
| Households with a broadband subscription | 95.1% ±1.0 pts | 95.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Round Rock?
Owners occupy 55.5% of Round Rock's occupied homes and renters 44.5%. The median owner-occupied home is valued at $418,600 by its owner (±$12,497). The median renter pays $1,763 a month including utilities, and 40.2% of renters pay 35% or more of their income on rent.
| Measure | Round Rock | Williamson County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $418,600 ±$12,497 | $447,000 | +$117,941 |
| Median gross rent | $1,763 ±$38 | $1,796 | +$143 |
| Renters paying 35% or more of income on rent | 40.2% ±3.8 pts | 38.0% | +4.9 pts |
| Median monthly owner costs, with a mortgage | $2,364 ±$63 | $2,453 | – |
| Owner-occupied homes | 55.5% ±1.8 pts | 66.4% | −4.8 pts |
| Renter-occupied homes | 44.5% ±1.8 pts | 33.6% | – |
| Housing units | 51,143 ±1,128 | 262,644 | +8,581 |
| Homeowner vacancy rate | 0.8% ±0.6 pts | 0.9% | – |
| Rental vacancy rate | 4.2% ±1.3 pts | 4.2% | – |
| Single-family detached homes | 64.4% ±1.6 pts | 72.5% | – |
| Mobile homes | 0.1% ±0.1 pts | 1.9% | – |
| Built 2020 or later | 5.5% ±1.0 pts | 9.7% | – |
| Built 2010 to 2019 | 22.6% ±1.6 pts | 29.7% | – |
| Built 1939 or earlier | 0.2% ±0.1 pts | 1.3% | – |
| Households with no vehicle | 3.5% ±0.8 pts | 3.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Round Rock building?
Builders took permits for 845 new housing units in Round Rock in 2025 (529 in single-family houses), 6.0 per 1,000 residents against 6.6 across Texas.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Round Rock work and get to work?
64.1% of Round Rock's workers drive alone and 24.8% work from home. The average trip to work takes 24.9 minutes. The unemployment rate in 2020-2024 averaged 3.8%.
| Measure | Round Rock | Williamson County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 72.3% ±1.5 pts | 70.7% | – |
| Unemployment rate | 3.8% ±0.8 pts | 3.9% | −1.4 pts |
| Drove alone to work | 64.1% ±2.2 pts | 63.9% | – |
| Carpooled | 8.8% ±1.3 pts | 7.7% | – |
| Public transportation | 0.1% ±0.1 pts | 0.3% | – |
| Walked | 0.9% ±0.4 pts | 0.8% | – |
| Worked from home | 24.8% ±1.7 pts | 25.4% | +17.2 pts |
| Mean travel time to work | 24.9 min ±0.8 | 27.9 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Round Rock?
27 census tracts lie mostly in Round Rock, and 21 more reach into it (2020 census blocks). Their median household incomes run from $52,471 (Tract 207.01) to $222,396 (Tract 206.07).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 207.07Williamson County | 6,954 | $105,897 |
| Tract 206.07Williamson County | 7,165 | $222,396 |
| Tract 207.04Williamson County | 6,170 | $64,438 |
| Tract 207.12Williamson County | 5,618 | $128,402 |
| Tract 215.14Williamson County | 5,211 | $82,776 |
| Tract 206.08Williamson County | 6,753 | $158,188 |
| Tract 207.11Williamson County | 5,058 | $133,289 |
| Tract 207.06Williamson County | 5,284 | $206,324 |
| Tract 215.03Williamson County | 4,824 | $62,473 |
| Tract 206.02Williamson County | 4,778 | $131,250 |
| Tract 207.09Williamson County | 4,633 | $92,329 |
| Tract 215.02Williamson County | 4,600 | $81,650 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Round Rock) · Census block assignment files
How does Round Rock compare with other places in Texas?
By the Census Bureau's July 2025 estimates, Round Rock is the 201st-most populous of the 19,476 U.S. incorporated places that have one and the 26th-most populous of 1,224 in Texas.
Round Rock ranks 192nd of 933 places in Texas with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 26th | 1,224 |
| Growth 2020-2025 (PEP) | 147th | 784 |
| Residents per square mile | 84th | 979 |
| Median household income | 192nd | 933 |
| Per capita income | 156th | 978 |
| Median home value | 118th | 950 |
| Median gross rent | 126th | 852 |
| Poverty rate | 591st | 716 |
| Bachelor's degree or higher | 140th | 877 |
| Median age | 509th | 973 |
| Owner-occupied share | 841st | 973 |
| Work from home | 84th | 557 |
| Travel time to work | 528th | 976 |
Round Rock's figures with every place in Texas (CSV)
Every place in Texas, sortable · Compare Round Rock with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Round Rock?
5 of the 57 figures for Round Rock on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Round Rock are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Round Rock.