South Tucson is a city in Pima County, Arizona, United States and an enclave of the much larger city of Tucson. South Tucson is known for being heavily influenced by Hispanic, and especially Mexican, culture; restaurants and shops which sell traditional Mexican food and other goods can be found throughout the city. According to the 2010 census, the population of the city is 5,652.

Pima County is a county in the south central region of the U.S. state of Arizona. As of the 2020 census, the population was 1,043,433, making it Arizona's second-most populous county. The county seat is Tucson, where most of the population is centered. The county is named after the Pima Native Americans, also known as Tohono O'odham, who are indigenous to this area.