Anchorage is a unified home rule municipality in the U.S. state of Alaska, on the West Coast of the United States. With an estimated 291,538 residents in 2018, it is Alaska's most populous city and contains more than 40% of the state's population; among the 50 states, only New York has a higher percentage of residents who live in its most populous city. The Anchorage metropolitan area, which includes Anchorage and the neighboring Matanuska-Susitna Borough, had a population of 399,148 in 2018, accounting for more than half the state's population. At 1,706 square miles (4,420 km²) of land area, the city is the fourth-largest by area in the United States and larger than the smallest state, Rhode Island, which has 1,212 square miles (3,140 km²).