New Smithville is an unincorporated community in Weisenberg Township in Lehigh County, Pennsylvania, United States.

It is located west of the city of Allentown and near the border with Berks County.

It is located at the intersection of Pennsylvania Route 863 and Interstate 78/U.S.

The New Smithville telephone exchange uses area code 610.

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