The Metro North Railroad service has three main lines east of the Hudson River: the Hudson Line, the Harlem Line, and the New Haven Line. The Harlem and Hudson Lines provide rail service predominantly to those commuters living in the northern suburbs of New York (Westchester, Putnam and Dutchess Counties). The New Haven Line provides service to commuters living in coastal New York communities (along the Long Island Sound) and Connecticut (Fairfield and New Haven Counties).