San Diego, Texas — interactive Google street map, satellite and terrain views, Street View, live National Weather Service conditions and 7-day forecasts, real-time local and world news, and an editorial description of San Diego, Duval County.
| 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, Texas, unfolds across a landscape of subtle, rolling plains, where the earth lies open to a vast, ever-changing sky. It lies 51.6 miles west of Corpus Christi, TX (from Corpus Christi, TX: bearing 267°T), and is situated 8.9 miles west of Rancho Alegre. Here, the air carries a dry, sun-baked scent, a persistent perfume of mesquite and wild sage, particularly potent in the late afternoon when the light softens to a burnished gold. The terrain, a gentle undulation of tawny grasses and scrubby brush, hints at the ancient seabeds that once formed this part of South Texas, a quiet testament to geological time. Distant windmills, their blades turning with a slow, deliberate grace, punctuate the horizon, their white forms stark against the pale blue expanse. Life in San Diego moves with a measured cadence, a quiet persistence that mirrors the land itself. The roots of San Diego run deep into the region's agricultural past, a history shaped by the fertile soil and the enduring spirit of its settlers. For generations, farming and ranching have been the lifeblood of this community, with cotton fields and cattle ranches defining the local economy. The legacy of these early endeavors is still palpable, evident in the weathered barns and the quiet pride of those who continue to work the land. While the larger metropolises draw the eye, San Diego offers a different kind of richness, a connection to the earth and a communal understanding forged in shared experience and a deep-seated resilience. The local diner, a hub of conversation and connection, hums with the low murmur of everyday life, a place where stories are exchanged and the day's news is shared, a microcosm of the town's enduring character.
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This page provides an interactive Google map of San Diego, Texas with street, satellite and terrain views and integrated Street View imagery. 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 | June 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. |