- COORDINATES: 41.119348, -76.532356
- COUNTY: Columbia
- DISTANCE TO NEXT: Benton - 12
- EXPLANATION OF NAME: Named for Grist Mill Erected On Site of Town
- FOUNDED: 1772
- MANUFACTURER: Carlisle Foundry Co.
- SHAPE: Standard 1-sided
- STATUS: Missing ball finial. Marker was repainted by Jim Carn in August of 2011. Marker still in place October 2016.

1981 photo by Fred Yenerall

August 2011 photo by Jim Carn

August 2011 photo by Jim Carn

August 2011 photo by Jim Carn

August 2011 photo by Jim Carn
PA 254 at west end of town