Florence

Town, seat (1875) of Pinal county, central Arizona, U.S., 50 miles (80 km) southeast of Phoenix. It lies on the Gila River in a farming area (mainly cotton) that is irrigated by means of the Ashurst-Hayden Diversion Dam. One of the oldest white settlements in the state, Florence was founded in 1866 and named for the sister of Governor Richard McCormick. The community developed as a copper-mining