Easton is a city in Northampton County, Pennsylvania, United States. The population was 26,800 as of the 2010 census. It is the county seat of Northampton County.
Along with Allentown and Bethlehem, Easton is one of the primary cities that comprise the Lehigh Valley, Pennsylvania's third most populous metropolitan area. Easton is the easternmost city of the Lehigh Valley, sitting on the confluence of the Delaware River and the Lehigh River, for which the Lehigh Valley is named. Easton is the smallest of the three Lehigh Valley cities, with approximately one-fourth of the population of the largest Lehigh Valley city, Allentown.
Easton is almost equidistant from Philadelphia, which is 60 miles (97 km) to the south, and New York City, which is 70 miles (110 km) to the east.