Moffat County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 13,292. The county seat is Craig. With an area of 4,751 square miles, it is the second-largest county by area in Colorado, behind Las Animas County. Moffat County comprises the Craig, CO, Micropolitan Statistical Area, which is also included in the Steamboat Springs–Craig, CO, Combined Statistical Area.