Williamsport South / Nittany Mtn. KOA, Pennsylvania, Map and Contact Info Custom Search     More info about Williamsport South / Nittany Mtn. KOA LOCATION AND CONTACT INFO: Address: 2751 Millers Bottom Rd New Columbia, Pennsylvania 17856 GPS Coordinates: Latitude: 41.0489769 Longitude: -76.9544067 phone number