Wikipedia
Ardsley-on-Hudson (Metro-North station)
The Ardsley-on-Hudson Metro-North Railroad station serves Dobbs Ferry, New York and Irvington, New York via the Hudson Line. Trains leave hourly for New York City 7 days a week, and every 25 to 35 minutes on weekday mornings during peak times. It is 21.0 miles from Grand Central Terminal and travel time to Grand Central is about 47 minutes.
A common misconception is that the station serves the similarly named village of Ardsley, New York. The village of Ardsley is located about 2.5 miles east, on the discontinued Putnam Division line, which ceased passenger service in 1958. The main campus of Mercy College is walking distance from the station. As of August 2006, daily commuter ridership was 420 and there were 134 parking spots.