Santa Cruz County, Arizona

Santa Cruz County
County
Santa Cruz County Courthouse
Seal
Location within the U.S. state of Arizona
Arizona's location within the U.S.
Coordinates: 31°32′00″N 110°50′00″W / 31.533333333333°N 110.83333333333°W / 31.533333333333; -110.83333333333
Country	United States
State	Arizona
Founded	March 15, 1899
Named for	Santa Cruz River
Seat	Nogales
Largest city	Nogales
Area
• Total	1,238 sq mi (3,210 km2)
• Land	1,237 sq mi (3,200 km2)
• Water	1.2 sq mi (3 km2)  0.1%
Population  (2020)
• Total	47,669
• Estimate  (2023)	49,158
• Density	39/sq mi (15/km2)
Time zone	UTC−7 (Mountain)
Congressional district	7th
Website	www.co.santa-cruz.az.us

Santa Cruz is a county in southern Arizona, United States. As of the 2020 census, the population is 47,669.^[1] The county seat is Nogales.^[2] The county was established in 1899. It borders Pima County to the north and west, Cochise County to the east, and the Mexican state of Sonora to the south.

Santa Cruz County includes the Nogales, Arizona Micropolitan Statistical Area, which is also included in the Tucson-Nogales, Arizona Combined Statistical Area.