Round Rock Flag

Round Rock

County Seat:
No
Area (mi²):
38.616
State:
Texas

Round Rock is a city located in Williamson County, Texas. Round Rock has a 2026 population of 142,752. Round Rock is currently growing at a rate of 2.66% annually and its population has increased by 18.4% since the most recent census, which recorded a population of 120,572 in 2020.

The median household income in Round Rock is $99,287 with a poverty rate of 7.78%. The median age in Round Rock is 36.2 years: 35 years for males, and 37.2 years for females. For every 100 females there are 97.8 males.

142.8K
Total Population
3,697
Density (mi²)
3.7K 2.66%
Growth

Round Rock Population

Round Rock Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026142,7523,6972.66%
2025139,0553,6962.73%
2024135,3594,0433.08%
2023131,3164,0473.18%
2022127,2693,1232.52%
2021124,1464,6173.86%
2020120,572-13,007-9.74%
2019133,5794,5333.51%
2018129,0465,2704.26%
2017123,7762,8212.33%
2016120,9554,8864.21%
2015116,0693,3362.96%
2014112,7333,1332.86%
2013109,6003,0652.88%
2012106,5352,6532.55%
2011103,8823,1083.08%
2010100,7748870.89%
200061,13630,21397.7%
199030,92318,183142.72%
198012,7409,929353.22%
19702,81191147.95%
19601,90070058.33%
19401,200-200-14.29%
19001,40000%

Median Age

Overall: 36.2 years
Female: 37.2 years
Male: 35 years

Round Rock Adults

There are 97,693 adults, (14,300 of whom are seniors) in Round Rock.

Sex Ratio

Female: 64,619 (50.6%)
Male: 63,167 (49.4%)

Demographics

The racial composition of Round Rock includes 52.89% White, 11.3% Black or African American, 8.17% Asian, 6.49% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White67,59052.89%
Two or more races26,00220.35%
Black or African American14,43611.3%
Asian10,4368.17%
Other race8,2946.49%
Native American7300.57%
Native Hawaiian or Pacific Islander2980.23%
Race
Population ↓
Percentage (of total)
Two or more races20,61916.14%
White8,9507%
Other race7,2225.65%
Native American5950.47%
Black or African American4200.33%
Asian1010.08%
Race
Population ↓
Percentage (of total)
White58,64045.89%
Black or African American14,01610.97%
Asian10,3358.09%
Two or more races5,3834.21%
Other race1,0720.84%
Native Hawaiian or Pacific Islander2980.23%
Native American1350.11%

Round Rock Marital Status

Economics and Income Statistics

Round Rock 's average per capita income is $60,929. Household income levels show a median of $99,287. The poverty rate stands at 7.78%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$146,196$176,272
Families$123,104$151,251
Households$99,287$130,406
Non Families$61,547$81,317

$60,929

Average Income

$99,287

Median Household Income

7.78%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)