Somerset is a borough in and the county seat of Somerset County, Pennsylvania, United States. The population was 6,277 at the 2010 census. The borough is surrounded by Somerset Township. Somerset is just off Exit 110 of the Pennsylvania Turnpike (I-70 and I-76). Somerset is the principal city of the Somerset, PA Micropolitan Statistical Area, and is also one of two cities, the other being Johnstown, that make up the larger Johnstown-Somerset, PA Combined Statistical Area.
The Somerset County Courthouse and Uptown Somerset Historic District are listed on the National Register of Historic Places.
- Somerset was a central stage for the Whiskey Rebellion of 1794. Several rebellion leaders, including Harmon Husband, lived in Somerset. The federal militia sent to put down the rebellion worked from its headquarters in the nearby town of Berlin. The Whiskey Rebellion was the first major test of the federal authority under the newly adopted U.S. Constitution and under President George Washington.
- On September 11, 2001, United Airlines Flight 93, bound from Newark, New Jersey, to San Francisco and one of the four planes hijacked that day by al-Qaeda operatives, crashed near Shanksville, killing all 44 persons on board. It is believed that hijackers intended to fly this plane into the U.S. Capitol Building or the White House.
- In July 2002, nine miners were trapped for 77 hours, 240 feet (73 m) underground, by flooding in the Quecreek coal mine, just outside Somerset.