Northampton County is one of several Pennsylvania and New Jersey counties that comprise the Lehigh Valley. Bethlehem is the county's county seat.
- Lehigh Valley IronPigs. The AAA-level minor league team of the 2008 World Series champion Philadelphia Phillies plays their home games at Coca-Cola Park in neighboring Allentown from early April through early October.. Tickets: (610) 841-PIGS.
- Philadelphia Eagles. The Philadelphia Eagles hold their twice-a-day summer training camp practices each July and August at Lehigh University in Bethlehem.. Admission is free.
Northampton County is the current or former residence of several famous Americans, including:
- Mario Andretti, former professional race car driver.
- Marco Andretti, professional race car driver.
- Michael Andretti, professional racing team owner, former professional race car driver.
- Jonathan Frakes, director and actor.
- Larry Holmes, boxing's former heavyweight champion of the world.
- Dwayne Johnson ("The Rock"), professional wrestler, actor.
- Kristen Maloney, gymnast and former Olympian.
- Jonathan Taylor Thomas, actor.
- Brian Schneider, professional baseball player, New York Mets.
- Tighe Scott, NASCAR and modified driver.