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CITY

San Marcos

Texas · 77,830 residents (2025 est.) · 38.9 sq mi
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Part of the Austin metro area
The short version

San Marcos is a city of 70,897 people in Texas. This skews young, with a median age of 25.5. Owners hold 31% of the housing stock. The population has more than doubled since 2000, adding 36,164 people. People stay put here: 68% were in the same home a year ago. The poverty rate is 26.9%, above the 12.5% national rate.

At a glance
Lower income
below the US median
US median: $82,259
Younger
median age 25.5
US median: 38.9
Average education
38% hold a bachelor's degree
US average: 36%
Less affordable
home values up 124%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
70,897
+104%since 2000
from 34,733 in 2000
77,830 in 2025 (Census Bureau estimate)
1990 – 2025
Population density
1,824 / sq mi
+43%since 2009
from 1,275 / sq mi in 2009
US average: 281
Median age
25.5
+9%since 2000
from 23.3 in 2000
US average: 38.9
Land area
38.9 sq mi
Population, 1990 – 2024
25K37K50K62K75K19902000201020202024San Marcos
202471K
1990201020202024
Age distribution, 2024
Under 54.4%(3,097)
US avg: 5.6%
5 to 93.4%(2,413)
US avg: 6%
10 to 143.2%(2,239)
US avg: 6.4%
15 to 1911.9%(8,408)
US avg: 6.6%
20 to 2425.6%(18,174)
US avg: 6.5%
25 to 3417.2%(12,177)
US avg: 13.7%
35 to 4410.8%(7,648)
US avg: 13.2%
45 to 546.2%(4,411)
US avg: 12.2%
55 to 646.6%(4,693)
US avg: 12.7%
65 to 747.1%(5,065)
US avg: 10.2%
75 to 842.5%(1,782)
US avg: 5.1%
85 and over1.1%(790)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$51,281
+9%inflation adjusted, since 2000
from $25,809 in 2000
US average: $82,259
1990 – 2024
Per capita income
$27,545
+105%since 2000
from $13,468 in 2000
US average: $44,673
Households earning $100K+
30.3%
+16.5 ptssince 2009
from 13.8% in 2009
US average: 53.3%
Poverty rate
26.9%
−1.6 ptssince 2000
from 28.5% in 2000
US average: 12.5%
Income inequality (Gini)
0.461
−8%since 2010
from 0.500 in 2010
US average: 0.476
Workforce by industry, 2024
Information14.5%
US avg: 10.8%
Finance & insurance7.3%
US avg: 5.9%
Professional, scientific, technical6.7%
US avg: 5.1%
Wholesale trade5.3%
US avg: 6.9%
Retail trade4.6%
US avg: 9.9%
Other services3.7%
US avg: 6.7%
Public administration1.9%
US avg: 4.8%
Transportation & warehousing1.8%
US avg: 2.2%
Arts, entertainment, food1.2%
US avg: 1.9%
Education & health services0.6%
US avg: 0.9%
Agriculture, forestry, fishing0.5%
US avg: 1.6%
Manufacturing0.3%
US avg: 0.4%
Construction0.2%
US avg: 1.2%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$310,400
+124%inflation adjusted, since 2000
from $76,000 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,322
+17%inflation adjusted, since 2000
from $622 in 2000
US average: $1,442
Owner-occupied
30.8%
+0.6 ptssince 2000
from 30.2% in 2000
69.2% rent
Vacancy rate
7.7%
−0.5 ptssince 2009
from 8.2% in 2009
US average: 10.0%
Persons per household
2.28 people
−12%since 2009
from 2.60 people in 2009
US average: 2.54
Owner cost-burdened
23.3%
−2.6 ptssince 2009
from 25.9% in 2009
US average: 22.9%
Renter cost-burdened
61.9%
+0.5 ptssince 2009
from 61.4% in 2009
US average: 47.4%
Afford Score
6.1
+37%since 2009
from 4.4 in 2009
2009 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Gentrification Score
81
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04

Race & ethnicity

2000
White, non-Hispanic55.2%(19,165)
Black5.4%(1,860)
Hispanic / Latino36.5%(12,676)
Asian1.2%(418)
Other0%
2024
White, non-Hispanic44.6%(31,617)
Black5.2%(3,698)
Hispanic / Latino42.2%(29,933)
Asian2.1%(1,501)
Other5.9%(4,148)
Diversity Score
77
+10%since 2009
from 70 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican33.4%(23,658)
Central American3.8%(2,707)
Salvadoran1.5%(1,053)
Nicaraguan1.5%(1,038)
Puerto Rican0.6%(435)
Honduran0.5%(385)
Cuban0.5%(348)
Bolivian0.4%(290)
Spaniard0.4%(278)
Venezuelan0.3%(220)
Costa Rican0.2%(147)
+ 7 more hispanic origin groups with data
Colombian0.1%(95)
Chilean0.1%(50)
Guatemalan0.1%(42)
Panamanian0.1%(42)
Peruvian0%(28)
Argentine0%(19)
Asian origin
Filipino0.5%(327)
Asian Indian0.4%(293)
Chinese0.4%(285)
Vietnamese0.2%(160)
Korean0.2%(127)
Bangladeshi0.2%(123)
Nepalese0.1%(105)
Burmese0%(16)
Pakistani0%(16)
Japanese0%(15)
Malaysian0%(13)
+ 2 more asian origin groups with data
Pacific Islander origin
Samoan0%(35)
Tongan0%(10)
Ancestry
German11.9%(8,415)
Irish8.7%(6,179)
English7.3%(5,202)
Italian2.6%(1,808)
Scottish2.4%(1,675)
French2.3%(1,646)
American2%(1,424)
Polish1.2%(859)
Norwegian0.9%(603)
Czech0.8%(578)
Swedish0.8%(546)
+ 37 more ancestry groups with data
Scotch-Irish0.6%(458)
Welsh0.5%(346)
Russian0.4%(289)
Dutch0.4%(268)
Nigerian0.3%(241)
British0.3%(238)
Portuguese0.3%(219)
Arab0.3%(201)
Finnish0.2%(158)
Iranian0.2%(146)
Brazilian0.2%(140)
West Indian0.2%(133)
Austrian0.1%(101)
Hungarian0.1%(97)
Jamaican0.1%(89)
Lebanese0.1%(69)
Armenian0.1%(63)
Ghanaian0.1%(60)
Egyptian0.1%(58)
Turkish0.1%(44)
Canadian0.1%(38)
Belgian0.1%(36)
Danish0%(33)
Guyanese0%(33)
Greek0%(22)
Ethiopian0%(20)
Slovak0%(17)
Ukrainian0%(17)
Croatian0%(15)
Bulgarian0%(12)
Latvian0%(12)
Serbian0%(11)
Slovene0%(11)
Moroccan0%(10)
Haitian0%(10)
Section 05

Education

Bachelor's degree or higher
38.3%
+9.3 ptssince 2000
from 29.0% in 2000
US average: 35.6%
High school or higher
90.5%
+11.0 ptssince 2000
from 79.5% in 2000
US average: 89.6%
Graduate degree
14.6%
+3.5 ptssince 2000
from 11.0% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
24.0 min
+52%since 2000
from 15.7 min in 2000
US average: 26.5
Drive alone to work
68.4%
−8.8 ptssince 2009
from 77.2% in 2009
US average: 68.9%
Carpooled to work
11.4%
+2.7 ptssince 2009
from 8.7% in 2009
US average: 8.5%
Public transit
1.3%
−1.6 ptssince 2009
from 2.9% in 2009
US average: 3.2%
Worked from home
11.1%
+6.9 ptssince 2009
from 4.3% in 2009
US average: 15.0%
Walked to work
4.5%
−1.4 ptssince 2009
from 5.9% in 2009
US average: 2.4%
Biked to work
0.8%
+0.2 ptssince 2009
from 0.6% in 2009
US average: 0.4%
No vehicle available
8.1%
+1.3 ptssince 2009
from 6.8% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
5.2%
−4.9 ptssince 2011
from 10.1% in 2011
US average: 5.2%
Labor force participation
67.2%
+7.8 ptssince 2011
from 59.3% in 2011
US average: 63.5%
Women 20-64 in the labor force
76.1%
+1.3 ptssince 2020
from 74.8% in 2020
US average: 74.6%
Self-employed
13.9%
−2.7 ptssince 2009
from 16.7% in 2009
US average: 13.1%
Management & professional
34.9%
+6.8 ptssince 2009
from 28.1% in 2009
US average: 42.5%
Section 08

People & community

Male
46.3%
−3.2 ptssince 2009
from 49.5% in 2009
Female
53.7%
+3.2 ptssince 2009
from 50.5% in 2009
Foreign born
9.1%
+3.5 ptssince 2009
from 5.6% in 2009
US average: 14.1%
Veterans
4.7%
−1.1 ptssince 2009
from 5.8% in 2009
US average: 6.2%
With a disability
15.5%
+4.9 ptssince 2012
from 10.6% in 2012
US average: 13.3%
Uninsured
16.4%
−7.0 ptssince 2013
from 23.4% in 2013
US average: 8.4%
Broadband at home
85.3%
+13.5 ptssince 2017
from 71.8% in 2017
US average: 91.0%
Computer in household
96.1%
+1.4 ptssince 2020
from 94.7% in 2020
US average: 95.5%
Same house as last year
67.8%
+1.0 ptssince 2020
from 66.8% in 2020
US average: 87.7%
English only at home
72.8%
+0.2 ptssince 2016
from 72.6% in 2016
US average: 77.7%
Spanish at home
23.3%
−1.0 ptssince 2016
from 24.3% in 2016
US average: 13.6%
Marital status
Men 15+
Never married58.5%(16,756)
Married31.6%(9,045)
Widowed1.3%(359)
Divorced8.6%(2,462)
Women 15+
Never married59.6%(20,571)
Married26.6%(9,168)
Widowed4%(1,377)
Divorced9.9%(3,410)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

Uninsured
16.4%
−7.0 ptssince 2013
from 23.4% in 2013
US average: 8.4%
Employer-based
54.0%
−1.4 ptssince 2020
from 55.4% in 2020
US average: 54.8%
Direct-purchase
19.3%
+2.3 ptssince 2020
from 17.0% in 2020
US average: 13.8%
Medicare
11.7%
+1.4 ptssince 2020
from 10.3% in 2020
US average: 18.4%
Medicaid
12.2%
+1.0 ptssince 2020
from 11.2% in 2020
US average: 20.9%
VA health care
1.9%
−0.1 ptssince 2020
from 2.0% in 2020
US average: 2.2%
Any private
70.0%
−0.5 ptssince 2020
from 70.5% in 2020
US average: 67.1%
Any public
22.3%
+1.6 ptssince 2020
from 20.7% in 2020
US average: 36.7%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2024
Gulf War (2001 or later)38.1%(1,110)
US avg: 26.4%
Gulf War (1990s)19%(553)
US avg: 24.3%
Vietnam era32.5%(946)
US avg: 33.1%
Korean War2.7%(80)
US avg: 4.5%
World War II0.2%(6)
US avg: 1%

Share of the 2,911 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
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Frequently asked

How many people live in San Marcos, Texas?

San Marcos, Texas has about 70,897 residents according to the 2024 American Community Survey.

What is the median household income in San Marcos, Texas?

The typical household in San Marcos, Texas earns about $51,281 a year. Half of households make more than that, and half make less.

Is San Marcos, Texas expensive?

In San Marcos, Texas, the median home is worth about $310,400, and the typical rent is about $1,322 a month.

How educated are people in San Marcos, Texas?

About 38.3% of adults age 25 and over in San Marcos, Texas hold a bachelor's degree or higher.

What is the poverty rate in San Marcos, Texas?

About 26.9% of people in San Marcos, Texas live below the federal poverty line.

Has San Marcos, Texas grown since 1990?

Yes, San Marcos, Texas has grown since 1990. The population has added about 42,154 residents, a change of about 147 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →