Where does this demographic data come from?

All demographic data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates, which samples about 3.5 million households annually. The 5-year estimates provide the most reliable data for small geographies like municipalities.

What is the difference between Census data and ACS data?

The decennial Census (conducted every 10 years) is a full population count focusing on basic demographics. The ACS is an ongoing survey that collects detailed data on income, education, housing, commute patterns, and more. ACS data is updated annually but represents averages over a 5-year period.

How accurate is this data for small towns?

For smaller municipalities, ACS estimates have wider margins of error because fewer residents are sampled. The 5-year estimates reduce this uncertainty by averaging over a longer period. For towns under 5,000 people, treat specific numbers as approximations rather than precise counts.

San Marcos, TX Population, Income & Demographics 2026

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Demographics — 2024 ACS 5-Year Estimatesi

Census

Populationi

70,897

Median Agei

25.5

Race & Ethnicityi

White

44.6%31,617

Hispanic/Latino

42.2%29,933

Black

5.2%3,698

Two or More

3.9%2,751

Asian

2.1%1,501

Other

1.9%1,334

American Indian/Alaska Native

0.1%53

Native Hawaiian/Pacific Islander

0%10

Educational Attainment (Age 25+)i

GED/Alternative

3.2%1,165

High School Diploma

19.2%7,014

Some College (<1 yr)

6.4%2,356

Some College (1+ yr)

15.9%5,813

Associate's Degree

7.5%2,744

Bachelor's Degree

23.7%8,679

Master's Degree

9.8%3,574

Professional Degree

1.6%603

Doctorate

3.1%1,151

HS or Higher

90.5%

BA or Higher

38.3%

Graduate+

14.6%

Housingi

Median Home Valuei

$310,400

Median Renti

$1,322

Tenure

Owner-Occupied

30.8%8,630

Renter-Occupied

69.2%19,383

Total Units

30,349

Homeownership

30.8%

Vacancy Rate

7.7%

Home Values

Under $50K

9.2%793

$50K–$100K

2.5%212

$100K–$150K

6.5%560

$150K–$200K

8.7%748

$200K–$300K

20.8%1,791

$300K–$500K

35.8%3,093

$500K–$1M

15.1%1,304

$1M+

1.5%129

Rent Distribution

Under $500

380

$500–$750

729

$750–$1,000

3,064

$1,000–$1,250

4,045

$1,250–$1,500

4,031

$1,500–$2,000

4,537

$2,000+

1,975

Year Built

2020 or later

7.1%2,153

2010–2019

25.8%7,830

2000–2009

18.9%5,734

1990–1999

11%3,327

1980–1989

14.2%4,319

1970–1979

9.4%2,839

1960–1969

4.4%1,341

1950–1959

4.5%1,357

1940–1949

2.4%742

1939 or earlier

2.3%707

Heating Fuel

Electricity

70.8%19,824

Utility Gas

26.2%7,340

Bottled/LP Gas

2.5%687

No Fuel

0.5%127

Coal

0.1%16

Solar

0%10

Other

0%9

Economyi

Median Household Incomei

$51,281

Mean Household Incomei

$66,133

Per Capita Incomei

$27,545

Poverty Ratei

24.3%

Unemploymenti

5.1%

Labor Forcei

42,046

Household Income Distribution

Under $10K

10.8%3,012

$10K–$15K

5.4%1,503

$15K–$20K

3.7%1,026

$20K–$25K

4.5%1,249

$25K–$30K

4.9%1,363

$30K–$35K

5.3%1,494

$35K–$40K

5.1%1,422

$40K–$45K

4.2%1,183

$45K–$50K

4.6%1,279

$50K–$60K

10.9%3,046

$60K–$75K

10.5%2,953

$75K–$100K

9.7%2,717

$100K–$125K

8.1%2,270

$125K–$150K

4.3%1,194

$150K–$200K

4.2%1,169

$200K+

4%1,133

Federally Subsidized Housingi

HUD

The federal government helps low-income families, seniors, and people with disabilities afford housing through several programs. Residents typically pay about 30% of their income toward rent, with the government covering the rest. This data shows how many households in this community receive that assistance.

Subsidized Homesi

546

Residentsi

1,204

Avg. Tenant Renti

$447/mo

Avg. Waitlisti

16 months

Programs in this community

Public Housing285 homes94% occupied$503/mo rent

Government-owned housing managed by local housing authorities

Housing Choice Vouchers161 homes89% occupied$441/mo rent

Rental vouchers (Section 8) that help tenants pay for private-market housing

Project Based Section 8100 homes97% occupied$298/mo rent

Privately owned apartments with rent subsidies tied to the building

Household Incomei

Based on area median of $51,281/yr

Extremely low incomeUnder $15K/yr

88%

Very low income$15K–$26K/yr

10.1%

Low income$26K–$41K/yr

1.4%

Moderate / aboveOver $41K/yr

0.5%

Who Receives This Housing

76.4% of subsidized households are headed by a single mother

68.5% of subsidized households are minority

18.3% of subsidized households include someone with a disability

40.1% of subsidized households include a senior (62+)

Ancestry & Heritage

Self-reported ancestry groups. Residents may report multiple ancestries, so totals may exceed 100%.

Foreign-Born Populationi

Foreign-Borni

6,4769.1%

By Region

Top Countries

Mexico

1,902

China

210

India

153

Germany

145

Philippines

144

Canada

Poland

Korea

Commute & Transportationi

Workersi

39,000

Avg. Commutei

24 min

How People Get to Work

Travel Time to Work

Workforce

Total Employed

39,728

Occupations

Industries

Social Characteristicsi

Marital Status (15+)i

Veteransi

2,911(4.7% of civilian adults)

Health Insurancei

83.6%Insured

16.4%Uninsured