San Diego is located in Texas. San Diego, Texas has a population of 4,651. San Diego is more family-centric than the surrounding county with 39% households with children. The county percentage for households with children is 31%.
The median household income in San Diego, Texas is $31,202. The median household income for the surrounding county is $44,685 compared to the national median of $66,222. The median age of people living in San Diego is 33.7 years.
The average high temperature in July is 97.29 degrees, with an average low temperature in January of 42.51 degrees. The annual precipitation is 25.41.