Crime Scene and Trauma Cleanup in San Diego, TX

San Diego is the county seat of Duval County in South Texas, straddling the Duval-Jim Wells county line on San Diego Creek, about 52 miles west of Corpus Christi.

The city's roots trace to Spanish land grants made around 1800 to Julián Flores and his son Ventura for the San Diego de Arriba and San Diego de Abajo ranches.

In 1848 Pablo Pérez bought land along San Diego Creek, built stone houses, and brought families to settle; the young community was known as Perezville.

By 1852 the settlement had taken the name San Diego, for Saint Diego (Didacus of Alcalá), and gained its first post office, housed in a hand-cut caliche blockhouse called the Casa Blanca.

The completion of the Texas-Mexican Railway through San Diego in 1881 turned the town into a trading hub for hides, wool, and cotton.

Duval County was created in 1858 and organized in 1876; it is named for Burr H. Duval, a Texas Revolution soldier killed in the Goliad Massacre.

For much of the twentieth century, Duval County politics were dominated by the Parr family political machine, centered in San Diego.

San Diego's population peaked at 5,033 in 1990 and has declined since; the 2020 census counted 3,748 residents.

The 2020 census counted 1,351 households and 916 families within San Diego's roughly 1.9 square miles.