YMCA of Sullivan County Share: Non-Profit Agencies YMCA of Sullivan County Visit Website Request Info 98 Wild Turnpike Rock Hill, NY 12775 (845) 395-1024 (845) 343-1484 (fax) Facebook About Map About This year-round building will provide us with the opportunity to offer a variety of youth programs ranging from outdoor education to arts, tumbling, drama, fitness classes & school vacation programs. What's Nearby? Distance: 5 10 15 20 25 50 mi.