San Angelo is a community in Tom Green County, Texas, United States, and county seat. The location is in the Concho Valley, a West Texas area between the northwestern Permian Basin, southwestern Chihuahuan Desert, northeastern Osage Plains, and southeast Central Texas. San Angelo has an total population of more than 100,000. Angelo State University, historic Fort Concho, and the Goodfellow Air Force Base are located in San Angelo. The town's popular nicknames include Angelo, the City of Concho, the Conchos Perl, and the West Texas Oasis. The total area of this town is 58.2 square miles.