sentences:  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 three-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 54,909 in 2019.