Demographics · TX
Round Rock, TX demographics: 127,786 residents, with a median age of 36.2 years, from the U.S. Census Bureau's American Community Survey 2020–2024 (5-year estimates).
127,786 people live in Round Rock, at a median age of 36.2 years (American Community Survey 2020–2024, a 5-year average)
Median age 36.2 years — younger than the U.S. median of 38.9.
ACS 2020–2024 5-year · ACS 5-Year Estimates 2020-2024 (released 2026-01-29)
In Round Rock, the largest race group is White (52.9%); 29.7% of residents are Hispanic or Latino (of any race); 17.0% were born outside the United States.
ACS 2020–2024 · B01001 / B01002
The median age in Round Rock is 36.2 years (±0.9), younger than the U.S. median of 38.9 years. The population is 49.4% male and 50.6% female. The largest age band is 5 to 17 at 18.0%.
| Age band | People | Share | ± margin |
|---|---|---|---|
| Under 5 | 7,080 | 5.5% | ±765 |
| 5 to 17 | 23,013 | 18.0% | ±1,385 |
| 18 to 24 | 12,450 | 9.7% | ±1,030 |
| 25 to 34 | 19,014 | 14.9% | ±1,222 |
| 35 to 44 | 20,485 | 16.0% | ±1,270 |
| 45 to 54 | 18,361 | 14.4% | ±1,102 |
| 55 to 64 | 13,083 | 10.2% | ±1,101 |
| 65 to 74 | 9,047 | 7.1% | ±747 |
| 75 and over | 5,253 | 4.1% | ±529 |
Median age by sex: 35.0 (male) · 37.2 (female).
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B01001 sex by age, B01002 median age) · place-grain · margins of error at the 90% confidence level · methodology →
ACS 2020–2024 · B02001 / B03003
The largest race group in Round Rock is White at 52.9% of the population. Separately, 29.7% of residents are Hispanic or Latino of any race. Race and Hispanic origin are two different questions on the census form, so their shares are reported separately and are not additive.
| Race (alone, or two or more) | People | Share | ± margin |
|---|---|---|---|
| White alone | 67,590 | 52.9% | ±2,490 |
| Black or African American alone | 14,436 | 11.3% | ±1,659 |
| American Indian & Alaska Native alone | 730 | 0.6% | ±342 |
| Asian alone | 10,436 | 8.2% | ±1,263 |
| Native Hawaiian & Pacific Islander alone | 298 | 0.2% | ±263 · low precision |
| Some other race alone | 8,294 | 6.5% | ±1,407 |
| Two or more races | 26,002 | 20.3% | ±2,107 |
| Hispanic or Latino (of any race) | 37,907 | 29.7% | ±2,021 |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B02001 race, B03003 Hispanic or Latino origin) · place-grain · margins of error at the 90% confidence level · methodology →
ACS 2020–2024 · B11001 / B25010
Round Rock has 48,647 households. 67.4% are family households and 25.8% are people living alone. The average household holds 2.61 people.
Total households
48,647
ACS 2020–2024 5-yr · B11001
Avg household size
2.61
ACS 2020–2024 5-yr · B25010 · ±0.06
Family households
67.4%
Share of all households · B11001
Living alone
25.8%
Share of all households · B11001
| Household type | Households | ± margin |
|---|---|---|
| Total households | 48,647 | ±1,160 |
| Family households | 32,769 | ±749 |
| Nonfamily households | 15,878 | ±1,186 |
| Householder living alone | 12,565 | ±1,105 |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B11001 household type, B25010 average household size) · place-grain · methodology →
ACS 2020–2024 · B05002 / C16001
17.0% of Round Rock residents were born outside the United States. 70.8% of residents age 5 and over speak only English at home. The most-spoken non-English language at home is Spanish (18.3%).
| Measure | Value | Source / grain |
|---|---|---|
| Foreign-born share | 17.0% | 21,756 people · B05002 |
| Speak only English at home (age 5+) | 70.8% | C16001 |
| Top non-English language at home | 18.3% | Spanish · 22,126 speakers · C16001 |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B05002 place of birth, C16001 language spoken at home) · place-grain · methodology →
ACS 2020–2024 · B15003
44.8% of adults age 25 and over in Round Rock hold a bachelor's degree or higher (the U.S. share is about 35%).
| Measure | Value | Source / grain |
|---|---|---|
| Bachelor's degree or higher (age 25+) | 44.8% | B15003 lines 22–25 over line 1 · place-grain |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B15003 educational attainment, population 25+) · place-grain · methodology →
Sources · provenance
The GEOID for Round Rock is 4863500. Every figure on this page is a place-grain American Community Survey 5-Year 2020–2024 estimate (ACS 5-Year Estimates 2020-2024 (released 2026-01-29)) shown with its margin of error. Full per-dataset detail: /sources/.