Like neighboring Berks County, Lehigh and Northampton counties have been experiencing a steady growth. Pennsylvania in general is growing moderatly with the Lehigh Valley, the state's third largest urban area, running a bit above the rest of the state.
Part of the reason is due to the valley's location. Served by Interstate 78, the Pennsylvania Turnpike, Conrail and the Lehigh Valley International Airport, the region is within 500 miles of 40 percent of the U.S. Population and 60 percent of Canada's Population.