Upton, New York is a hamlet on Long Island in the town of Brookhaven. It is the home of Brookhaven National Laboratory, and a National Weather Service station. Upton is located in Suffolk County, New York in the USA. The town is so named because it was the site of the U.S. Army's Camp Upton, which was active from 1917 until 1920, and again from 1940 until 1946. During World War II, the camp was rebuilt primarily as an induction center for draftees. The Army was later to use the site as a convalescent and rehabilitation hospital for returning wounded.