Bentonville is the ninth-largest city in Arkansas, United States and the county seat of Benton County. The city is centrally located in the county with Rogers adjacent to the east. The city is the birthplace and world headquarters of Walmart, the world's largest retailer. It is one of the four main cities in the four-county Northwest Arkansas Metropolitan Statistical Area, which is ranked 109th in terms of population in the United States with 463,204 residents in 2010, according to the United States Census Bureau. The city itself had a population of 35,301 at the 2010 Census, with an estimated population of 51,111 in 2018.