Transportation
Manhattan's and D.C.'s Populations Nearly Double Every Day With Commuters
Just think of the traffic.
The population difference is largest in New York County, which comprises Manhattan. There, the commuter-adjusted population is 94.7 percent larger than the residence population, jumping from 1,600,00 to 3,100,00. Most of these people come from other boroughs in New York City. Commuters traveling from Kings County (Brooklyn), Queens County (Queens), and Bronx County (the Bronx) to Manhattan account for three of the largest county-by-county population flows.