- Troy is a city located in Rensselaer County, New York, United States. It is situated on the eastern bank of the Hudson River and is part of the Albany-Schenectady-Troy Metropolitan Statistical Area. The city has a rich history and was once an industrial hub with a thriving manufacturing sector. Today, Troy is known for its charming downtown area, historic architecture, and cultural attractions. It is home to Rensselaer Polytechnic Institute, a prestigious engineering and technological university. Troy also hosts various annual events, including the famous Troy Victorian Stroll and the Troy Turkey Trot, one of the oldest footraces in the United States.