what county is clarington pa located?
Clarington, Pennsylvania. Clarington is an unincorporated community in the township of Barnett, in Forest County, Pennsylvania, United States. The community is located on the north bank of the Clarion River at the Pennsylvania Route 899 bridge, 12 miles (19 km) north of Brookville. Clarington had a post office until it closed on February 20, 2004; it still has its own ZIP code, 15828.