Florence is a town in Pinal County, Arizona, United States. The population was 17,054 at the 2000 census. According to 2005 Census Bureau estimates, the population of the city was 17,053, meaning population growth of 0%. The city is the county seat of Pinal County. Florence apartments for rent comparison page shows most up to date rent information on Florence apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.