Prescott Valley is a town with a current population of about 45,500 residents located in Yavapai County, Arizona, United States, and a suburb of Prescott . Prescott Valley was the seventh fastest-growing place among all cities and towns in Arizona between 1990 and 2000. According to the 2010 Census, the population of the town is 38,822.GeographyPrescott Valley is located in central Arizona approximately 85mi north of Phoenix at 5100ft. elevation. PV has good access to Arizona State Route 89, SR-89A and SR-69, connecting to Interstates 17 and 40. Air service is available at Ernest A. Love Field, about 8mi west.One of PV’s landmarks, Glassford Hill was once an active volcano between 10 and 14 million years ago. Colonel William A. Glassford traveled the area in the 1880s and helped build a system of 27 heliograph stations to monitor the movements of Apache Indians, U.S. military troops and civilians. Glassford Hill was a part of that early communications system. Today, it stands as an dormant volcano.