Explore El Castillo, Texas, with this interactive street and satellite map. You can “grab” the El Castillo, 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.
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| City | El Castillo |
| State | Texas (TX) |
| County | Starr |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 26.3348 |
| Longitude | -98.6391 |
| Population | 566 |
| Density | 758.4 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 78582 |
| Area Code | 830 |
| County Seat | Rio Grande City |
| School District | Rio Grande City Grulla Independent School District |
El Castillo is a locality in Starr County, Texas, United States. It is a small community with a population of 566. The population density is 758.4 people per km². El Castillo is located at 26.3348°N, 98.6391°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 78582.
El Castillo rests under a wide, often searing sky, its landscape a patient study in earth tones where scrubby mesquite and hardy huisache cling to the gently rolling terrain. It lies 21.1 miles west-north-west of Mission, TX (from Mission, TX: bearing 293°T), and is situated 6.1 miles north-west of Sullivan City. The air, especially in the late afternoon, carries a dry, almost chalky scent, and the sunlight, when it begins its descent, bleeds across the horizon in hues of bruised plum and molten gold, painting the low, persistent clouds with a fleeting, profound beauty. The land here is flat enough to invite contemplation of distance, yet the subtle shifts in elevation, the occasional dry creek bed snaking through the brush, suggest a history of water that has long since learned to be scarce. The very stillness of El Castillo can feel like a deliberate choice, a quiet refusal to be hurried by the world’s clamor. The story of El Castillo is deeply entwined with the fertile but often unforgiving earth of the Rio Grande Valley, where agriculture has long been the lifeblood, with cotton and citrus once dominating the fields before a broader diversification took hold. This region, part of the larger tapestry of South Texas, has seen waves of settlers drawn by the promise of land and opportunity, their legacy whispered in the naming of streets and the enduring traditions of its people. The economy of El Castillo, while rooted in the agricultural rhythms of its surroundings, also reflects a growing connection to broader trade and commerce, a quiet hum beneath the surface of its unassuming facade. There’s a distinct cultural flavor here, a blend of Mexican heritage and American enterprise, evident in the vibrant local markets and the welcoming nature of its inhabitants who understand the value of both hard work and communal spirit.
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This page provides an embedded street and satellite map of El Castillo, Texas — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 26.3348, -98.6391. 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 El Castillo and Starr County.
Detailed location data for El Castillo includes the ZIP code (78582), telephone area code (830), county seat of Starr County (Rio Grande City), and school district assignment (Rio Grande City Grulla 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 El Castillo 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. |