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regionmapThe most recent data for internal migration is obtained from the Internal Revenue Service. The IRS keep track of the number of individual income tax returns which, in a 2-year period, filed in one county in the first year and another county in the second year.

Most migration both to and from Westchester is movement within the New York Metropolitan Area. 71% of inmigrant returns, representing returns filed elsewhere in 2008 and filed in Westchester in 2009, were filed somewhere else in the Metro Area. The counties with the largest share of inmigrants were the Bronx (31%) and Manhattan (19%), followed by Queens (8%) and Fairfield County (7%).

Outmigrants are slightly more geographically disbursed, but almost two-thirds—63%--migrate elsewhere in the Metro Area as well, with 20% leaving for the Bronx, 18% for Manhattan, and 13% going to Fairfield. Putnam and Dutchess account for 8% and 7% of outmigrants, respectively.

Outside of the Metro Area, the State of Florida has by far the largest share of any state of both inmigrants (23%) and outmigrants (20%). Other top non-Metro Area sources and destinations include the large counties that contain Los Angeles, Chicago, and suburbs of Boston..

Tables
Domestic Migration Flow into Westchester County
Domestic Migration Flow out of Westchester County