There are 15 US Post Offices in Mohave County serving a total of 150,047 residents equating to 10,003 residents per post office. It's estimated that approximately 239,492 packages are handled across the 15 county post offices annually. Mohave County is located in the northwestern corner of the U.S. state of Arizona. As of the 2010 census, its population was 200,186. The county seat is Kingman, and the largest city is Lake Havasu City. Mohave County comprises the Lake Havasu City-Kingman, AZ Metropolitan Statistical Area, which is also included in the Las Vegas-Henderson, NV-AZ Combined Statistical Area. Mohave County contains parts of Grand Canyon National Park and Lake Mead National Recreation Area and all of the Grand Canyon-Parashant National Monument. The Kaibab, Fort Mojave and Hualapai Indian Reservations also lie within the county."