Karthaus is an unincorporated community in Clearfield County, Pennsylvania, United States.

[1] The community is located along Pennsylvania Route 879, 18.2 miles (29.3 km) east-northeast of Clearfield.

Karthaus has a post office with ZIP code 16845, which opened on April 24, 1826.

[2][3] The community was named after Peter A. Karthaus, the proprietor of a local blast furnace.

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