San Diego city, Texas Demographics & Population 2026

Population Overview

San Diego city is a small community located in Texas. The total population is 3,795. It ranks as the 498th most populous out of 1,800 cities and towns in Texas.

Age Demographics

The median age in San Diego city is 35.6 years. This is about average than the state median of 35.5 years. With 31.9% of the population under 18, San Diego city has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in San Diego city is $46,969. This is 38% lower than the state median of $76,292. Compared to the national median of $78,538, household income here is 40% lower. The poverty rate stands at 32.1%. This is 132% higher than the state poverty rate of 13.8%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 8.6%. This is 68% higher than the state rate of 5.1%. The median home value is $59,600. Housing costs are 77% lower than the state median of $260,400. With a home-value-to-income ratio of just 1.3x, San Diego city is one of the most affordable housing markets in the area. 76.6% of occupied housing units are owner-occupied. This homeownership rate is 23% higher than the state average of 62.6%.

Race & Ethnicity

San Diego city has a predominantly Hispanic or Latino population, comprising 90.7% of all residents. White (non-Hispanic) residents account for 9.3%. The White (non-Hispanic) population (9.3%) is well below the state average of 39.9%. The Black or African American population (0.1%) is well below the state average of 11.9%. The Hispanic or Latino population is significantly higher than the state average (90.7% vs 39.5%).

Education

6.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 79% lower than the state rate of 33.1%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 70.8%.

Data Sources & Methodology

All demographic data for San Diego city, Texas is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Texas state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,800 Census-designated places in Texas. For official data, visit data.census.gov.