San Diego

County:: Duval County
County Seat:: Yes
Area (mi²):: 1.901
State:: Texas

San Diego is a city located in Duval County, Texas. San Diego has a 2025 population of 3,517. It is also the county seat of Duval County. San Diego is currently declining at a rate of -1.24% annually and its population has decreased by -5.86% since the most recent census, which recorded a population of 3,736 in 2020.

The average household income in San Diego is $50,990 with a poverty rate of 32.07%.The median age in San Diego is 35.6 years: 39.5 years for males, and 32.1 years for females.

Demographics

The racial composition of San Diego includes 83.14% White, 4.43% other race, and smaller percentages for Native American, Black or African American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	3,155	83.14%
Two or more races	419	11.04%
Other race	168	4.43%
Native American	51	1.34%
Black or African American	2	0.05%

San Diego Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

San Diego's average per capita income is $34,912. Household income levels show a median of $46,969. The poverty rate stands at 32.07%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$55,179	-
Households	$46,969	$50,990
Non Families	$45,179	$48,302
Families	$44,203	$48,834

$34,912

Average Income

$46,969

Median Household Income

32.07%

Poverty Rate