Shelltown is an unincorporated community and census-designated place (CDP) in Blair County, Pennsylvania, United States.

It was first listed as a CDP prior to the 2020 census.

[2] The CDP is in eastern Blair County, in the northern part of Woodbury Township.

Pennsylvania Route 866 passes through the community, leading north into Williamsburg and southwest 12 miles (19 km) to Martinsburg.

This Blair County, Pennsylvania state location article is a stub.