I think more than half of the state's population lives in Maricopa County. It ranked as the county with the highest numeric Maricopa is the largest in population. Types Mohave County is in the northwestern corner of the U.S. state of Arizona.As of the 2010 census, its population was 200,186. There are 15 counties in Arizona. Largest county in largest county in the state of Arizona is Maricopa County which is where the Phoenix metropolitan area is located. We all love the biggest cities that the Grand Largest School Districts in Arizona About this List Explore the largest school districts serving your area based on student enrollment using data from the U.S. Department of Education. Maricopa County is located in the south-central part of the U.S. state of Arizona.The U.S. Census Bureau estimated its population was 4,485,414 as of 2019, making it the state's most populous county, and the fourth-most populous in the United States, containing more than half the population of Arizona. The ten largest counties in the United States of America are: 1. Four other counties, Gila County, Santa Cruz County, Pinal County, and Graham County, are named for physical features of Arizona's landscape: the Gila River, the Santa Cruz River, Pinal Peak, and Mount … The county seat is Kingman, and the largest city is Lake Havasu City.Coordinates: Country United States Maricopa County named fastest-growing county in the U.S. for third year in a row Arizona's destinations and people are recognized nationally in a variety of ways. Maricopa County was the fourth most populous county in the nation in 2018 according to the most recent population estimates from the U.S. Census Bureau, released April 18. Eight of Arizona's fifteen counties are named after various Native American groups that are resident in parts of what is now Arizona, with another ( Cochise County) being named after a native leader. San Bernardino County, California (Total Area - 20,105.32 square miles) 2. Since the time of the last U.S. census in 2010, Maricopa County, home of Phoenix, has seen an increase in the total population of … Population of Counties in Arizona (2020) Maricopa County, with its population of 4,410,824 as of 2019, is the most populous county located within the state of Arizona. Coconino County is the largest in area and the County Seat is Flagstaff. 100 Biggest Cities In Arizona For 2020 Using the latest Census data, we detail the 100 biggest cities in Arizona. Answered Sep 27, 2019. The following is a list of the mountains and hills of Arizona, ordered by height.Entries in bold indicate the peak is the highest point in its respective county.Entries with a † indicate the peak has a low topographic prominence and may be … Read more on how this ranking was calculated. Four counties (Mohave, Pima, Yavapai and Yuma) were established in 1864 following the creation of the Arizona Territory in 1862.All but La Paz County were formed prior to statehood in 1912. You can all see a comprehensive list of all 210 cities and places in Arizona.