WEBFayetteville (/ ˈ f eɪ ə t v ɪ l /) [7] is the second-most populous city in the U.S. state of Arkansas, the county seat of Washington County, and the most populous city in Northwest Arkansas. The city had a population of 93,949 as of the 2020 census, which was estimated to have increased to 101,680 by 2023. [8]