Bloomville is a hamlet and census-designated place in the town of Kortright, Delaware County, New York, United States. The population was 213 at the 2010 census.Bloomville is located in the West Branch Delaware River valley, north of the Catskill Mountains. Administratively part of Kortright, the Bloomville CDP has according to the United States Census Bureau, has a total area of 1.3 square miles, all land. Bloomville is in the southwestern corner of Kortright.New York State Route 10 passes through the hamlet, leading southwest 7 miles to Delhi, the county seat, and northeast 12 miles to Stamford.The west end of the Catskill Scenic Trail, a rail-trail following the route of the former Ulster and Delaware Railroad, is in Bloomville. There is a parking lot just across Route 10 from the trailhead.Like many communities in the Catskills, the Bloomville population is split between farmers and second home owners.