Emmaus (/ɛˈmeɪ.əs/ em-AY-əs) is a borough in Lehigh County, Pennsylvania, in the United States. It is located 5 miles (8.0 km) southwest of Allentown, Pennsylvania, in the Lehigh Valley region of the state. It is 50 miles (80 km) north of Philadelphia, Pennsylvania's largest city, and 20 miles (32 km) west of the Delaware River. Emmaus is located in the Allentown-Bethlehem-Easton, PA-NJ Metropolitan Statistical Area, which is in the New York City-Newark, New Jersey, NY-NJ-CT-PA Combined Statistical Area.
The population of Emmaus was 11,368 in 2015. This borough has been given many awards, including the Delaware Valley Green Building Council's Sustainable Community Award. In 2007 and 2009, Emmaus has been listed as one of the top 100 "Best Places to Live" in the United States by Money magazine.