Westchester County is in the southeastern part of New York State. In popular conception, Westchester County is generally divided into northern and southern areas. The northern portion (places north of Interstate 287/Cross Westchester Expressway) is often seen as rural and wealthy; the southern portion (White Plains and south) is more urban.
At the closest point, Westchester is only 2 miles north of Manhattan (from Broadway & Caryl Avenue in southern Yonkers to Broadway & West 228th Street in the Marble Hill section of Manhattan) One can walk this distance in about 40 minutes, the amount of time it would typically take to drive from Westchester to Manhattan.
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