Bloomingdale is located in Essex County, New York. Bloomingdale is a hamlet within the city of St. Armand. The community is located on the Saranac River, a popular spot for boating and fishing. Bloomingdale is also in close proximity to Debar Mountain. Among the biggest companies in Bloomingdale are The Bloomin Market and AG Construction Company. The biggest school here is the Bloomingdale School. One of the best places to visit when you are in Bloomingdale is McKenzie Mountain.