ZIP Code 78664 in Round Rock, TX

Data Last Updated: October 1, 2025
City:Round Rock, Texas
Names to Avoid:
Old Round Rock, Three Point
Counties:Williamson County[Primary]
Travis County
Timezone:Central (GMT -06:00)
Local Time:8:12:44 PM
Population:60,287 [See All]
Area Codes:737 / 512
Classification:Standard [Normal Street Delivery]
Coordinates:30.5040, -97.6467
Land Area:16.612 sq mi
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Population & Demographics


ZIP Code 78664 has 60,287 residents and 21,815 households (average 2.75 persons per household). The median age is 34.3 years, slightly younger than the state (35.6) and younger than the nation (38.8). The gender split is 49.3% male and 50.7% female, which is about the same as the national male share (49.1%), making this a female-majority area. Largest groups are White (48.7%, much lower than the national average of 61.6%) and Hispanic or Latino (35.8%); Hispanic or Latino residents make up 35.8%, which is much higher than the national average (18.7%).

Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship

Source: U.S. Census 2020 Demographics & Housing Characteristics (DHC) and U.S. Census 2011-2023 American Community Survey (ACS) 5-Year Estimates.
2020 Population:60,287Source: Census DHC
2023 ACS Population Estimate:62,272Source: Census ACS
2025 ZC Population Estimate:65,411Source: ZIP-Codes.com
Population Density:3,629.1 people per sq mile
Average Income:$85,919Source: Census ACS
Households:21,815Source: Census DHC
Average House Value:$317,400Source: Census ACS
Persons Per Household:2.75Source: Census DHC
Average Family Size:3.05Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group20102011210220132014201520162017201820192020202120222023
Census ACS Population Estimate--51,94254,86457,80658,95959,76560,88461,36162,18364,68663,66160,15262,16862,272
Decennial Census52,932------------------60,287------
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Population by Age & Gender (Total, Male, Female)


Median Age: 34.3

Male Median Age: 33.3

Female Median Age: 35.3

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male1,9802,0932,3392,1752,1322,3562,6272,4422,2462,0341,8141,6391,369966722390208164
Female1,9902,0022,1962,1161,9492,2952,5902,5522,2392,1311,8641,7971,5931,219956506291305
Total3,9704,0954,5354,2914,0814,6515,2174,9944,4854,1653,6783,4362,9622,1851,678896499469
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:29,36541.68%
Black:7,30010.36%
Hispanic:*21,59530.65%
Asian:4,0565.76%
American Indian:6520.93%
Hawaiian:1290.18%
Other:7,35310.44%
Total:70,450100%
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
* NOTE: Hispanic or Latino is an ethnicity, not a race. This means individuals who identify as Hispanic will also be included in one of the race categories (such as White or Black). As a result, the totals shown here may exceed 100% when Hispanic is displayed alongside racial groups.

Gender Breakdown


GenderCount%Median Age
Males:29,69649.26%33.3 years
Females:30,59150.74%35.3 years
Total:60,287100%34.3 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:50,88881.72%
Native, born in PR, Island Areas, or abroad:8311.33%
Foreign born, naturalized U.S. citizen:4,7997.71%
Foreign born, not a U.S. citizen:5,75416.95%
Total Population:62,272100%
Total Native Population:51,71983.05%
Total Foreign-born Population:10,55316.95%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS
Note: Nativity and Citizenship derived from American Community Survey (ACS) 5-year estimates. Total Population listed here will not match official ZIP Code population totals, which are based on the Decennial Census.

Income & Employment


In 2023, the Median household income is $85,919, which is markedly greater than the state median ($76,292), is up $23,636 (37.9%) since 2011 and above its 2019 pre-pandemic level by $10,153. Family households earn a median of $105,471 versus $63,750 for nonfamily households (a difference of $41,721). By gender, male median income is $67,658 and female is $48,836, which is far less than the national female median ($53,445), with a current gap of $18,822 that has widened from 2011 to 2023. The labor-force participation rate is 75.8%, which is far greater than the national rate (63.5%). The unemployment rate is 4.3%, which is lower than the national rate (5.2%). The largest occupation group is Management (42.6%).

Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Tables DP02, DP03, DP04 and DP05.

Median Income Over Time (Household, Family, Nonfamily, Male, Female)


Income Type2011201220132014201520162017201820192020202120222023
Median Household Income$62,283$60,442$61,401$61,673$62,446$63,923$67,462$72,467$75,766$77,679$80,403$83,599$85,919
Median Family Income$68,097$67,126$67,643$68,944$70,961$73,247$74,822$81,992$86,640$90,282$92,908$101,523$105,471
Median NonFamily Income$45,833$46,567$45,581$46,935$45,973$43,732$46,565$50,444$51,752$54,813$54,485$59,077$63,750
Median Male Income$44,808$43,359$43,468$45,630$46,829$48,198$50,153$50,804$52,295$53,859$56,699$63,127$67,658
Median Female Income$38,618$38,232$39,097$39,530$38,211$36,209$40,135$40,583$42,653$42,909$45,456$47,755$48,836
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment Status


Employed:36,46672.43%
Unemployed:1,6543.29%
Not In Labor Force:12,22924.29%
Total:50,349100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment by Occupation (Civilian Employed Population, 16 and Over)


Management, business, science, and arts:15,55242.65%
Service:5,42414.87%
Sales and Office:8,49723.30%
Natural resources, construction, and maintenance:2,5617.02%
Production, transportation, and material moving:4,43212.15%
Total Civilian Employed Population:36,466100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability


In 2023, the median home value is $317,400, which is much higher than the state median ($260,400), is up $169,800 (115.04%) since 2011 and above its 2019 pre-pandemic level by $101,600. The median gross rent is $1,645, which is considerably higher than the state median ($1,339), is up $639 (63.52%) since 2011 and above its 2019 pre-pandemic level by $336. Of occupied housing, owners make up 54.11% (72.35% with a mortgage, 27.65% free-and-clear) and renters 45.89% - making this ZIP Code less home ownership than the state and higher than national rental averages. The vacancy rate is 3.96%, which is considerably lower than the national rate (10.43%).

Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Table DP03, SELECTED ECONOMIC CHARACTERISTICS.

Median Home Value (Comparison)


Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Home Value Over Time


Group2011210220132014201520162017201820192020202120222023
Median Home Value$147,600$147,600$149,600$150,400$157,300$161,100$172,900$193,900$215,800$231,800$240,700$281,800$317,400
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:1281.20%
$500 to $999:5505.14%
$1,000 to $1,499:3,39731.77%
$1,500 to $1,999:4,24939.74%
$2,000 to $2,499:1,83717.18%
$2,500 to $2,999:2692.52%
$3,000 or more:1911.79%
No Rent:700.65%
Total:10,691100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time


Group2011210220132014201520162017201820192020202120222023
Median Rent$1,006$1,033$1,032$1,044$1,056$1,111$1,137$1,228$1,309$1,319$1,371$1,500$1,645
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):9,12239.15%
Owner Occupied (free and clear, no mortgage):3,48614.96%
Renter Occupied:10,69145.89%
Total Occupied Housing Units:23,299100%

Occupied Housing Units:23,29996.04%
Vacant Housing Units (not graphed):9603.96%
Total Housing Units:24,259100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Housing Type (Single-Family, Multi-Family, Other)


Single-Family Units:16,46467.87%
Multi-Family Units:7,79532.13%
Other Units:00.00%
Total Housing Units:24,259100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


In 2023, 34.60% of adults (25+) have a bachelor's degree or higher, which is on par with the state rate (33.10%). High school or higher is 90.20%, which is notably higher than the state rate (85.70%). The uninsured rate is 15.30%, which is far higher than the national rate (8.60%). Public coverage is 23.50%, which is falls below the national rate (36.30%). The share of people in poverty is 7.50%, which is generally lower than the state rate (10.50%), up 0.80 percentage points since 2011. This points to rising hardship - a weaker consumer base, greater strain on public services, and job-market headwinds. Among residents ages 3+, the largest enrollment group is elementary (36.56%). College enrollment is 27.08%, which is on par with the state rate (23.90%), meaning the community mirrors broader higher-education participation.

Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Tables DP02 and DP03.

Educational Attainment of Adults (25 and Older)


Less than 9th grade:1,9554.67%
9th to 12th grade, no diploma:2,1365.11%
High school graduate (includes equivalency):9,44922.59%
Some college, no degree:9,49922.71%
Associate's degree:4,31510.32%
Bachelor's degree:9,43422.55%
Graduate or professional degree:5,04312.06%
Total:41,831100%
High school or higher:37,74090.22%
Bachelor's degree or higher:14,47734.61%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Health Insurance Coverage by Type (Private, Public, Uninsured)


Private Insurance:43,91064.59%
Public Insurance:14,59521.47%
No Insurance:9,47813.94%
Total:67,983100%
Has Health Insurance:58,50586.06%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2023)


Group2011210220132014201520162017201820192020202120222023
% of People in Poverty6.7%8.0%7.9%6.7%8.0%7.2%7.1%6.7%7.5%6.2%6.7%7.0%7.5%
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.

School Enrollment by Education Level (Ages 3 and Older)


Nursery School, Preschool:9996.27%
Kindergarten:8525.35%
Elementary school (grades 1-8):5,82536.56%
High school (grades 9-12):3,94224.74%
College or graduate school:4,31527.08%
Total:15,933100%
Early Childhood:1,85111.62%
K-12 (Primary & Secondary School):10,61966.65%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 78664 supports both business and residential activity. According to the Business Census (2023), there are 1,841 business establishments, employing about 28,470 people with an annual payroll of $1,649,775,000. USPS data shows 23,786 residential mailboxes and 1,923 business mailboxes, reflecting local delivery coverage.

# Residential Mailboxes:23,786Source: USPS
# Business Mailboxes:1,923Source: USPS
Total Delivery Receptacles:24,868Source: USPS
Single Family Delivery Units:3,655Source: USPS
Multi Family Delivery Units:4,581Source: USPS
# of Businesses:1,841Source: CBP
1st Quarter Payroll:$401,712,000Source: CBP
Annual Payroll:$1,649,775,000Source: CBP
# of Employees:28,470Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 78664 is located in Williamson County, Texas, within the Austin-Round Rock-San Marcos, TX Metropolitan Statistical Area (CBSA 12420) and Texas's 10th, 17th, and 31st Congressional Districts. This Metro area has a population of 2,357,497 people, about 2.56% of whom live in ZIP Code 78664. It covers 16.612 sq mi of land and a water area of 0.091 sq mi.

CBSA Name:Austin-Round Rock-San Marcos, TXSource: Census
CBSA Number:12420Source: Census
CBSA Type:MetroSource: Census
CBSA Division:--Source: Census
CBSA Population:2,357,497Source: Census
MSA:Austin-San Marcos, TX MSASource: Census
Land Area:16.612 sq miSource: Census
Water Area:0.091 sq miSource: Census
Congressional District:10,17,31Source: USPS
Congressional Land Area:5070.95, 7651.16, 2154.49 sq miSource: Census
PMSA:--Source: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:4863500Source: Census
Place Name:Round Rock city; TexasSource: Census

Adjacent & Nearby ZIP Codes


78665 | | 78663

Schools in ZIP Code 78664


ZIP Code 78664 is part of 2 school districts, including: Pflugerville Independent School District (Grades PK thru 12) and Round Rock Independent School District (Grades Pre-Kindergarten thru 12th). There are 23 public schools and 2 private school(s) in this ZIP Code. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Caldwell El 1718 Picadilly Dr
Round Rock, TX 78664
District: Pflugerville Independent School District
Dearing El 4301 Gattis School Rd
Round Rock, TX 78664
District: Pflugerville Independent School District
Gattis El 2920 Round Rock Ranch Rd
Round Rock, TX 78664
District: Round Rock Independent School District
Claude Berkman El 400 W Anderson Ave
Round Rock, TX 78664
District: Round Rock Independent School District
C D Fulkes Middle 300 W Anderson Ave
Round Rock, TX 78664
District: Round Rock Independent School District
Xenia Voigt El 1201 Cushing Dr
Round Rock, TX 78664
District: Round Rock Independent School District
Vic Robertson El 1415 Bayland St
Round Rock, TX 78664
District: Round Rock Independent School District
Double File Trail El 2400 Chandler Creek Blvd
Round Rock, TX 78664
District: Round Rock Independent School District
Round Rock Opport Ctr Daep 931 Luther Peterson Pl
Round Rock, TX 78664
District: Round Rock Independent School District
Hopewell Middle 1535 Gulf Way
Round Rock, TX 78664
District: Round Rock Independent School District
Forest Creek El 3805 Forest Creek Dr
Round Rock, TX 78664
District: Round Rock Independent School District
Stony Point H S 1801 Tiger Trail
Round Rock, TX 78664
District: Round Rock Independent School District
Caldwell Heights El 4010 Eagles Nest
Round Rock, TX 78664
District: Round Rock Independent School District
Success H S 500 Gattis School Rd
Round Rock, TX 78664
District: Round Rock Independent School District
Ridgeview Middle 2000 Via Sonoma Trl
Round Rock, TX 78664
District: Round Rock Independent School District
Blackland Prairie El 2105 Via Sonoma Trl
Round Rock, TX 78664
District: Round Rock Independent School District
Union Hill El 1511 Gulf Way
Round Rock, TX 78664
District: Round Rock Independent School District
Cedar Ridge H S 2801 Gattis School Rd
Round Rock, TX 78664
District: Round Rock Independent School District
Neysa Callison El 1750 Thompson Trl
Round Rock, TX 78664
District: Round Rock Independent School District
Pfc Robert P Hernandez Middle 1901 Sunrise Rd
Round Rock, TX 78664
District: Round Rock Independent School District
Meridian World School Llc 2555 N Ih 35
Round Rock, TX 78664
Idea Round Rock Tech College Preparatory 3301 Greenlawn Blvd
Round Rock, TX 78664
Idea Round Rock Tech Academy 3301 Greenlawn Blvd
Round Rock, TX 78664
Concordia High School 1500 Royston Ln Ste A
Round Rock, TX 78664
District: Private School
Blooming Scholars Montessori School 405 W Main St
Round Rock, TX 78664
District: Private School

Colleges & Post Secondary Schools near ZIP Code 78664


Central Texas Beauty College-Round Rock 1400 N. Mays
Round Rock, TX 78664-4604
Type: Post Secondary
South University-Austin 1220 West Louis Henna Boulevard
Round Rock, TX 78681-2300
Type: Post Secondary
Galen Health Institutes-Austin Campus 1201 W. Louis Henna Boulevard
Austin, TX 78781-2301
Type: Post Secondary
Universal Technical Institute-West Texas 301 West Howard Lane
Austin, TX 78753-9742
Type: Post Secondary
Ann Webb Skin Institute 11701 Jollyville Road
Austin, TX 78759-3936
Type: Post Secondary
Southwestern University 1001 E. University Avenue
Georgetown, TX 78626
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on October 1, 2025.

  1. U.S. Postal Service [Last Updated: 10/1/2025], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 10/1/2025], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2023 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 10/1/2025], https://nces.ed.gov