Oro Valley, AZ is a town located in the northern part of Pima County, Arizona. It is situated in the foothills of the Santa Catalina Mountains and is a popular destination for outdoor activities such as hiking, biking, and golfing. The town was incorporated in 1974 and has grown to become one of the most affluent suburbs of Tucson. ORO Valley is home to many businesses, restaurants, and shopping centers, as well as a number of parks and recreational areas.