Book excerpt: White Plains in the 20th Century explores the community's growth as the county seat of Westchester through historic images that span a century. White Plains, located about 25 miles north of New York City, is the county seat of Westchester County and the birthplace of New York State. Its central location in Westchester made White Plains the hub of 18th-century stagecoach roads that ran from New York City to upstate New York and Connecticut. After the Revolutionary War and a famous battle, White Plains continued to grow into a large village connected to the city by train; its population exploded in the first decade of the 20th century thanks to European immigrants. In the 1920s, the population grew again, with professionals and commuters filling the new house and apartment developments created during a real estate boom. The city's last growth spurt was during the post-World War II baby boom, when urban renewal transformed the city into an imposing urban landscape. Through it all, White Plains has been a city with a diverse population in an affluent suburban county with strong governmental, business, educational, cultural, and commercial institutions.