White Plains is a city in Westchester County, New York, United States. It is the 29th-largest municipality in the state of New York, an inner suburb of New York City, and the county seat and commercial hub of Westchester County, a densely populated suburban county that is home to about one million people. White Plains is located in south-central Westchester County. Its downtown (Mamaroneck Avenue) is 25 miles (40 km) north of Midtown Manhattan. The city's total population was 59,599 in the 2020 census, up from 53,077 at the 2010 census. According to the city government, the daytime weekday population is estimated at 250,000.