The median age of Arizonans has only been increasing over the past decade. Here's which counties are the oldest and youngest in the state.

Among the 15 counties on our list is Maricopa County, in the southwestern swing state of Arizona. Maricopa County, home to Phoenix, is the politically competitive heart of one of the key ...

How different are violent crime rates in Arizona’s 15 counties ... balancing for population, Maricopa County has the highest violent crime rate in the state. There were 224 violent crime ...