Atascosa is a small, unincorporated community in southwestern Bexar County, Texas, set just off Interstate 35 about fourteen miles southwest of downtown San Antonio. The Spanish word atascosa, meaning "boggy," described the area's low-lying, water-holding terrain well before the community took shape, and the name is shared with the adjacent county that sits farther south along I-37. Despite the shared name, the community of Atascosa has always belonged to Bexar County. The community developed as a rural crossroads and rail stop serving surrounding farms and ranches, and it retains that agricultural character today. Much of the surrounding landscape is open grassland and scrub, broken by live oaks, mesquite, and working ranchland. The Medina River valley and its tributaries run through the wider area, and the Atascosa River begins to the south, giving the region its identity as a gateway between San Antonio's expanding edge and the South Texas brush country. Modern Atascosa functions as a quiet residential fringe of San Antonio. The ZIP code 78002, shared with the nearby communities of Macdona and Von Ormy, covers a mix of rural homesteads, larger acreage properties, and newer single-family subdivisions that have pushed outward along the I-35 and Loop 1604 corridors. Residents typically work in San Antonio, reachable in roughly twenty to twenty-five minutes by car, while enjoying a lower-density, country setting at the end of the day. The community is closely tied to the Southwest Independent School District, which has its administrative offices on Old Pearsall Road in Atascosa itself. That institutional anchor, together with the area's road and freight connections, makes Atascosa a practical and increasingly visible part of Bexar County's south side.