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, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Native American

Black or African American

Asian

Native Hawaiian or Pacific Islander

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%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

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