Chestnut Hill is an unincorporated community and census-designated place (CDP) in Northampton County, Pennsylvania, United States.

Chestnut Hill is on the eastern edge of Northampton County, in the southeastern quadrant of Forks Township.

It is bordered to the west by Sullivan Trail (old Pennsylvania Route 115), which leads northwest 4 miles (6 km) to Stockertown.

Pennsylvania Route 611 follows the Delaware River along the eastern edge of Chestnut Hill, leading south into Easton and northeast 17 miles (27 km) to Portland.

Chestnut Hill is a 719-foot-high (219 m) ridge which runs along the southern border of the CDP, overlooking the Delaware River.