With a population of over 1 million people, Pima County is the second-biggest county (by population) in Arizona. It's home to Tucson, the second-largest city in Arizona after Phoenix. Situated in the heart of the Sonoran Desert, Pima County is known for much more than its spectacular saguaros and stunning sunsets. A day trip can take you from the desert floor to the mountains of the Coronado National Forest to the top of Mt. Lemmon, the southernmost ski destination in the United States. The co...