The Mexico–United States border separates Baja California from California

iss073e0886792 (Oct. 1, 2025) --- The Mexico–United States border separates Baja California (left) on the Mexican side from California (right) on the U.S. side in this photograph from the International Space Station as it orbited 261 miles above. This region is part of the Sonoran Desert, with the Algodones Dunes prominently visible on the U.S. side. Near upper left, is the Mexican city of San Luis Río Colorado with a population of about 177,000.