Explore San Diego, Texas, with this interactive street and satellite map. You can “grab” the San Diego, TX street map and move it around to re-centre it. You can change between standard map view and satellite map view by clicking the small square in the bottom left-hand corner of the map. You can use the zoom buttons on the lower right side of the map to zoom in or out to street-level detail. You will find live weather, local and world news below.
| City | San Diego |
| State | Texas (TX) |
| County | Duval |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 27.763914 |
| Longitude | -98.238895 |
| Population | 3,675 |
| Density | 770.8 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 78384 |
| Area Code | 830 |
| County Seat | San Diego |
| School District | San Diego Independent School District |
San Diego is a locality in Duval County, Texas, United States. It has a population of approximately 3,675. The population density is 770.8 people per km². San Diego is located at 27.7639°N, 98.2389°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 78384.
San Diego exists as a quiet testament to the enduring spirit of the South Texas landscape. It lies 10.4 miles west of Alice, TX (from Alice, TX: bearing 274°T), and is situated 11.8 miles east of Rosita. The land here is a study in subtle undulation, a sweep of dry grasses and mesquite scrub that stretches towards the horizon under a sky that often feels vast enough to swallow the world. The San Diego Creek, a ribbon of life in this arid expanse, meanders through the environs, its banks a slightly greener hue against the prevailing palette of ochre and pale gold. The air itself carries a dry, clean scent, tinged with the dust of the plains and the faint, sweet perfume of unseen wildflowers that bloom briefly after a rain. Muralla Tank, seven miles distant, offers a reflective surface to the wide Texas sky, a man-made reservoir that serves as a vital water source in this thirsty region. This corner of Texas, where San Diego lies, is a place where history whispers rather than shouts. The legacy of ranching runs deep, a tradition that continues to shape the local economy, with cattle grazing on vast tracts of land that have been in families for generations. The bilingual character of the borderlands is present, a natural blending of English and Spanish that enriches the cultural fabric of San Diego. The designation as part of the Papahanaumokuakea Marine National Monument, a protected area of immense ecological significance, is a unique and defining characteristic, fostering a deep respect for the natural world. This quiet existence, punctuated by the slow passage of time and the enduring rhythms of rural life, forms the distinctive character of San Diego.
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This page provides an embedded street and satellite map of San Diego, Texas — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 27.763914, -98.238895. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on San Diego and Duval County.
Detailed location data for San Diego includes the ZIP code (78384), telephone area code (830), county seat of Duval County (San Diego), and school district assignment (San Diego Independent School District). These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct San Diego is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |