ZIP Code 78666

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San Marcos · Guadalupe County · Texas

Quick Facts

63,836

Population

457.3

Area (sq mi)

140

People / sq mi

America/Chicago

Time Zone

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ZIP Type

Demographics

27.0

Median Age

48.2%

Male

51.8%

Female

7.8%

Foreign-Born

Race

White 63.7%

Black or African American 5.2%

Asian 1.8%

American Indian / Alaska Native 0.5%

Native Hawaiian / Pacific Islander 0.1%

Two or More Races 20.4%

Ethnicity

Hispanic or Latino 43.8%

Hispanic/Latino is an ethnicity category from the Census Bureau and may overlap with race categories.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

Income & Employment

$55,478

Median Household Income

$28,813

Per Capita Income

23.3%

Poverty Rate

5.6%

Unemployment Rate

25.1 min

Mean Commute Time

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

Education

High School Graduate or Higher 58.6%

Bachelor's Degree or Higher 34.6%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

Housing

36,354

Total Housing Units

33,836

Occupied Units

2,518

Vacant Units

2.35

Avg Household Size

Occupancy Type

Owner 38.4%

Renter 61.6%

$271,900

Median Home Value

$1,294

Median Rent

1997

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

Nearby ZIP Codes

ZIP Code	City	Population	Distance
78655	Martindale, TX	2,739	8.8 mi
78640	Kyle, TX	42,954	11.5 mi
78670	Staples, TX	168	11.5 mi

Related Areas

Guadalupe County San Marcos, TX Texas

All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.