New Castle, Westchester County, New York, is a pristine residential town in the heart of the county encompassing the villages of Chappaqua and Millwood, best known for its nationally recognized schools, celebrity residents, and extraordinary quality of life. The Chappaqua Central School District consistently ranks among the finest in New York State and the entire nation, making the town a magnet for families who prioritize educational excellence. Downtown Chappaqua offers charming independent shops, gourmet restaurants, and a genuine community feel that larger suburbs often lack. The Metro-North Harlem Line provides express service to Grand Central in under an hour, and the town’s proximity to major highways makes it accessible to corporate campuses throughout northern Westchester. With rolling hills, horse farms, beautifully designed homes on generous lots, and a safe, welcoming atmosphere, New Castle is widely regarded as one of the premier residential destinations in all of Westchester County, NY.