Ehrhart's Mill Historic District | |
 Ehrhart's Mill in June 1970 | |
   | |
| Nearest city | Old Mill Road, Lower Saucon Township, Pennsylvania, U.S |
|---|---|
| Coordinates | 40°33′43″N 75°20′58″W / 40.56194°N 75.34944°W |
| Area | 5.2 acres (2.1 ha) |
| Built | 1799, 1867, 1900 |
| Architect | Charles Beckel |
| Architectural style | Pratt truss bridge |
| NRHP reference No. | 87000666[1] |
| Added to NRHP | April 30, 1987 |
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 district includes nine contributing buildings, two contributing sites, and four contributing structures associated with a 19th and early 20th century grist mill.