AZ History & Facts
County Information - Arizona
By Cynthia Kirkeby
Mar 19, 2006, 13:21 PST

County Information for Arizona


There are 15 counties in the state of Arizona.

The largest Arizona county by size is Coconino County, which is 18,619 square miles.

The largest Arizona county by population is Maricopa County, which has a population of 3,072,149.

Source: National Association of Counties


Here are Arizona QuickFacts from the U.S. Census Bureau.