Texas / Census place 4865600

San Marcos

A Census profile of the people, homes, and daily patterns that shape this place.

Official Census name: San Marcos city

At a glance

A city in numbers.

Population
77,830
2025 estimate
Annual change
+2.3%
Population estimate
Density
1,925/sq mi
40.4 sq mi land area
Median age
25.5 years
ACS 5-year estimate

Living here

The everyday equation.

Households, homes, education, and the time it takes to get around.

Median household income
$51,281
Median home value
$310,400
Median gross rent
$1,322
Bachelor’s degree or higher
38.3%
Typical commute
24 min
Public transit commute
1.3%

Climate normals

The long view of weather.

Thirty-year averages, not a forecast. Temperature and precipitation describe the typical conditions recorded from 1991 through 2020.

Representative station: AUSTIN SAN ANTONIO (13 mi from place center)
Average high
81.5°F
Average low
57.7°F
Annual rainfall
31.3"
Annual snowfall
0"

Month by month

A year in San Marcos.

Typical high and low °F
JFMAMJJASOND
Typical precipitation inches
J
F
M
A
M
J
J
A
S
O
N
D

Data vintage

Population is from the 2025 Population Estimates Program. Household, housing, education, and commute data are from the 2020-2024 American Community Survey 5-year release.

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Population, housing, work, and travel data for this Census place.

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Population, housing, work, and travel data for this Census place.

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Keep exploring

Compare San Marcos with Melbourne