Geography

Cohoes is located at 42°46′24″N 73°42′11″W (42.773250, -73.703110).^[12]
According to the United States Census Bureau, the city has a total area of 4.2 square miles (11 km²), of which, 3.7 square miles (9.6 km²) is land and 0.5 square miles (1.3 km²) (11.79%) is water.
Cohoes is at the confluence of the Mohawk with the Hudson River, where the Mohawk forms several channels and islands. Cohoes is named for its most famous landmark, the Cohoes Falls, a majestic waterfall first seen by the area's successive generations of indigenous peoples. In the historic era, these were the Mohawk Nation. The city includes Van Schaick Island, where the historic Van Schaick Mansion is located, and Simmons Island.
Within Albany County, the city has the Town of Colonie to its northwest, west, and south; with the Town and village of Green Island to the south of Van Schaick Island. To the north across the Mohawk River is Saratoga County and the town of Waterford's hamlet of Northside. A bridge connects Cohoes to Waterford. To the east of Van Schaick Island across the Hudson River is Rensselaer County and the city of Troy's Lansingburg neighborhood. The 112th Street Bridge connects Van Schaick Island to Troy.