0 By BigRig2019 Resorts Herkimer NEW YORK HERKIMER DIAMOND – KOA HERKIMER DIAMOND – KOA 4626 State Route 28 Herkimer, NY 13350 Phone: 315-891-7355 Alternate: 800-562-0897 Email: hdmkoa@herkimerdiamond.com Website: https://koa.com/campgrounds/herkimer/ Open:…