Beacon is a city located in Dutchess County, New York, USA. Although the city's estimated living population is around 16,000 people, the 2000 census placed the city total population at 13,808. Beacon was so named to commemorate the historic Beacon fires which blazed forth from the summit of the Fishkill Mountains to alert the Revolutionary Armies about British troop movements. Beacon apartments for rent comparison page shows most up to date rent information on Beacon apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.