Chandler is a city in Maricopa County, Arizona, United States. It is the fourth-most populous city in Arizona, after Phoenix, Tucson, and Mesa. Chandler is a suburb within the Phoenix metropolitan area and is considered to be a part of the East Valley. As of the 2020 census, its population was 275,987, up from 236,123 at the 2010 census. Chandler is a commercial and tech hub for corporations like Intel, Northrop Grumman, Wells Fargo, PayPal and Boeing.