Yuma is a city in Arizona located on the Colorado River. It is the county seat of Yuma County and has a population of 93, 064 as of the 2010 census. Yuma is the principal city of the Yuma, Arizona Metropolitan Statistical Area, which consists of Yuma County. The city's economy relies heavily on agriculture, military, and tourism. Yuma is known for its sunny climate and is a popular winter destination for snowbirds from colder climates.