Round Rock, Texas demographics

Round Rock, TX demographics: median age 36.2; 44.8% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Round Rock city, Texas · Incorporated city · GEOID 4863500. The survey estimates a population of 127,786 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Round Rock is 36.2 years, with a 90% margin of error of 0.9 years. There are 48,647 households (±1,160). Age and household distributions show how these totals are composed; they do not establish which neighborhood suits a particular person.

Every count and share is an estimate. “±” is a 90% margin of error (MOE); pp means percentage points. Derived shares use the category count divided by the named universe. Aggregated category MOEs and percentage MOEs are approximate. A margin larger than half its estimate is flagged as low precision. Blank source uncertainty is shown as unavailable, never zero.

Age distribution and sex

City, state and U.S. estimates · ACS 2020–2024
Measure / survey universe	City estimate ± MOE	State estimate ± MOE	U.S. estimate ± MOE
Median age Total population · years	36.2 ±0.9	35.6 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 127,786
Category	Count ± MOE	Share ± MOE (pp)	Texas	U.S.
Under 18	30,093 ±1,582	23.5% ±1.2 pp	25.0%	22.0%
18–34	31,464 ±1,598	24.6% ±1.2 pp	24.2%	22.8%
35–64	51,929 ±2,010	40.6% ±1.6 pp	37.4%	38.0%
65 and older	14,300 ±915	11.2% ±0.7 pp	13.4%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 127,786
Category	Count ± MOE	Share ± MOE (pp)	Texas	U.S.
Male	63,167 ±1,266	49.4% ±1.0 pp	49.9%	49.5%
Female	64,619 ±1,318	50.6% ±1.0 pp	50.1%	50.5%

The age groups are mutually exclusive and cover the entire population. The sex categories follow this ACS table’s published classification; they are not a survey of gender identity.

Race and Hispanic origin

Race · B02001 · ACS 2020–2024 Total population: 127,786
Category	Count ± MOE	Share ± MOE (pp)	Texas	U.S.
White alone	67,590 ±2,490	52.9% ±1.9 pp	48.5%	61.0%
Black or African American alone	14,436 ±1,659	11.3% ±1.3 pp	12.2%	12.2%
American Indian and Alaska Native alone	730 ±342	0.6% ±0.3 pp	0.7%	0.9%
Asian alone	10,436 ±1,263	8.2% ±1.0 pp	5.6%	6.0%
Native Hawaiian and Other Pacific Islander alone	298 ±263 · low precision	0.2% ±0.2 pp · low precision	0.1%	0.2%
Some other race alone	8,294 ±1,407	6.5% ±1.1 pp	9.3%	7.1%
Two or more races	26,002 ±2,107	20.3% ±1.6 pp	23.5%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 127,786
Category	Count ± MOE	Share ± MOE (pp)	Texas	U.S.
Not Hispanic or Latino	89,879 ±2,068	70.3% ±1.6 pp	60.3%	80.7%
Hispanic or Latino	37,907 ±2,021	29.7% ±1.6 pp	39.7%	19.3%

Hispanic origin and race are separate questions. People of Hispanic or Latino origin may be of any race and appear in both tables. Do not add the Hispanic share to race shares. Race alone and two-or-more-race groups are the mutually exclusive categories of the race table.

Household types, children and living alone

Household types · B11001 · ACS 2020–2024 Households: 48,647
Category	Count ± MOE	Share ± MOE (pp)	Texas	U.S.
Married-couple family	23,493 ±882	48.3% ±1.4 pp	48.9%	46.9%
Other family: male householder, no spouse present	2,626 ±476	5.4% ±1.0 pp	5.4%	5.1%
Other family: female householder, no spouse present	6,650 ±566	13.7% ±1.1 pp	13.4%	12.2%
Nonfamily: householder living alone	12,565 ±1,105	25.8% ±2.2 pp	26.2%	28.7%
Nonfamily: householder not living alone	3,313 ±479	6.8% ±1.0 pp	6.0%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 48,647
Category	Count ± MOE	Share ± MOE (pp)	Texas	U.S.
Households with people under 18	17,288 ±664	35.5% ±1.1 pp	34.7%	29.5%
Households without people under 18	31,359 ±1,418	64.5% ±2.5 pp	65.3%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 48,647
Category	Count ± MOE	Share ± MOE (pp)	Texas	U.S.
One-person nonfamily households	12,565 ±1,105	25.8% ±2.2 pp	26.2%	28.7%
Two-person households	15,228 ±938	31.3% ±1.8 pp	31.4%	33.8%
Three-person households	8,945 ±962	18.4% ±1.9 pp	16.3%	15.3%
Four-person households	7,761 ±649	16.0% ±1.3 pp	14.2%	12.6%
Five-person households	2,871 ±494	5.9% ±1.0 pp	7.3%	5.9%
Six-person households	937 ±263	1.9% ±0.5 pp	2.9%	2.2%
Seven or more people	340 ±112	0.7% ±0.2 pp	1.7%	1.4%

A family household contains related people under the Census definition. A nonfamily household can contain one person or unrelated people sharing a home. Households with children can also appear in the household-type and size tables, so those tables must not be added together. Household estimates exclude people living in group quarters from the household universe.

Nativity and languages spoken at home

Nativity · B05002 · ACS 2020–2024 Total population: 127,786
Category	Count ± MOE	Share ± MOE (pp)	Texas	U.S.
Native	106,030 ±1,721	83.0% ±1.3 pp	82.4%	85.9%
Foreign born	21,756 ±1,616	17.0% ±1.3 pp	17.6%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 120,706
Category	Count ± MOE	Share ± MOE (pp)	Texas	U.S.
English only	85,426 ±2,380	70.8% ±1.9 pp	64.9%	77.7%
Spanish	22,126 ±1,849	18.3% ±1.5 pp	28.1%	13.6%
French, Haitian, or Cajun	975 ±423	0.8% ±0.4 pp	0.3%	0.7%
German or other West Germanic	493 ±188	0.4% ±0.2 pp	0.3%	0.5%
Russian, Polish, or other Slavic	272 ±176 · low precision	0.2% ±0.1 pp · low precision	0.2%	0.7%
Other Indo-European	3,043 ±629	2.5% ±0.5 pp	1.7%	2.0%
Korean	412 ±197	0.3% ±0.2 pp	0.2%	0.3%
Chinese, including Mandarin and Cantonese	796 ±294	0.7% ±0.2 pp	0.7%	1.1%
Vietnamese	858 ±377	0.7% ±0.3 pp	0.9%	0.5%
Tagalog, including Filipino	212 ±115 · low precision	0.2% ±0.1 pp · low precision	0.3%	0.6%
Other Asian and Pacific Island	3,652 ±858	3.0% ±0.7 pp	1.1%	1.1%
Arabic	1,157 ±655 · low precision	1.0% ±0.5 pp · low precision	0.4%	0.5%
Other and unspecified	1,284 ±533	1.1% ±0.4 pp	0.7%	0.8%

Foreign born means not a U.S. citizen at birth; it includes naturalized citizens. Language categories describe speech at home among people age five and older. A language other than English at home does not establish that someone cannot speak English. This city page uses the published C16001 summary categories because the more detailed B16001 table does not provide these city records in this release.

Educational attainment

Highest completed education · B15003 · ACS 2020–2024 Population age 25 and older: 85,243
Category	Count ± MOE	Share ± MOE (pp)	Texas	U.S.
Less than high school graduate	5,505 ±760	6.5% ±0.9 pp	14.0%	10.4%
High school graduate or equivalency	16,234 ±1,237	19.0% ±1.4 pp	24.3%	26.0%
Some college, no degree	17,588 ±1,362	20.6% ±1.6 pp	20.1%	19.1%
Associate’s degree	7,702 ±1,043	9.0% ±1.2 pp	7.7%	8.8%
Bachelor’s degree	23,911 ±1,552	28.1% ±1.7 pp	21.5%	21.6%
Graduate or professional degree	14,303 ±1,161	16.8% ±1.3 pp	12.3%	14.1%

The denominator excludes residents under 25. Each person is counted in the highest attainment category they completed. This table does not measure the quality of local schools or the education level of every current student.

Residence one year earlier

Geographic mobility · B07003 · ACS 2020–2024 Population age 1 and older: 126,591
Category	Count ± MOE	Share ± MOE (pp)	Texas	U.S.
Same house	102,187 ±2,560	80.7% ±2.0 pp	86.0%	87.7%
Moved within same county	8,163 ±1,397	6.4% ±1.1 pp	7.4%	6.3%
Moved from a different county in the same state	9,428 ±1,425	7.4% ±1.1 pp	3.9%	3.1%
Moved from a different state	5,599 ±1,884	4.4% ±1.5 pp	2.0%	2.3%
Moved from abroad	1,214 ±407	1.0% ±0.3 pp	0.8%	0.6%

These are respondents’ residence patterns one year before their survey response, pooled across the five-year window. They are not a net migration count for 2025. A person can move to a different house within the same city or county; moves within the same county should not automatically be interpreted as new arrivals to the city.

Health insurance, internet access and veterans

11.9% of Round Rock residents (±1.0 percentage points) had no health insurance coverage when surveyed, compared with 17.1% in Texas and 8.4% nationally. 95.1% of households subscribe to broadband of any type, including cellular data plans. A subscription is not the same as available service: the FCC National Broadband Map shows providers at a specific address.

City, state and U.S. shares · ACS 2020–2024
Measure	Round Rock	Texas	U.S.	Compared with Texas
People without health insurance Civilian noninstitutionalized population	11.9% ±1.0 pp	17.1%	8.4%	Lower
Households with a broadband subscription Households	95.1% ±0.9 pp	91.4%	91.0%	Higher
Veterans Civilian population age 18 and older	7.1% ±0.9 pp	6.2%	6.2%	Not statistically different

Reading and reusing the estimates

The Census table links above lead to the original detailed tables. Counts, source universes and uncertainty are retained in the source observation download for Round Rock . Compare these figures with the same survey window; do not compare one city’s five-year estimate with another city’s annual estimate as though they measured the same period. For methods, see uncertainty and denominator calculations.

Read Round Rock housing and cost context or return to the city profile.