Ehrhart's Mill Historic District is a national historic district located along Saucon Creek at Lower Saucon Township in Northampton County in the Lehigh Valley region of eastern Pennsylvania.

The buildings include a small barn, the stone grist mill (destroyed), and three stone or brick vernacular houses.

The mill is a three-story, five level stone building with a slate covered gambrel roof.

[3] In recognition of the district's historical significance, it was added to the National Register of Historic Places in 1987.

This article about a property in Pennsylvania on the National Register of Historic Places is a stub.