The area is home to more than 820,000 people as of the 2010 U. The Lehigh Valley is geologically and geographically part of the Great Appalachian Valley, a region largely made up of limestone that stretches along the eastern edge of the Appalachian Mountains.
The Lehigh Valley is so named because it is composed of an actual valley that lies between two mountain ranges, Blue Mountain to the north and South Mountain to the south.
As of the 2nd quarter of 2016, the Lehigh Valley's top five employers are: 1.) Lehigh Valley Hospital and Health Network, 2.) St.
Luke's Hospital and Health Network, 3.) DEDC LLC, 4.) Air Products & Chemicals, 5.) Lehigh Valley Physician Group.
Hispanics and Latinos of any race made up 11.3% of the population.
The Lehigh Valley has seen an influx of residents coming from New Jersey and New York to take advantage of the reduced cost of living.
The Lehigh Valley's principal cities are Allentown, Bethlehem and Easton, making up the Allentown-Bethlehem-Easton metropolitan area.
The traditional bounds of the region are The Poconos to the north, the Delaware River to the east, the boundaries of Berks County and Montgomery County to the southwest, and the boundary with Bucks County to the south.
These transportation improvements overcame the country's first energy crises due to deforestation in the early 19th century.
The population of the area is expected to increase by 227,000 people by 2040.
The Lehigh Valley was recognized by business publication Site Selection Magazine in March 2014 as being the second-best performing region of its size for economic development in the entire United States. center of industrial manufacturing since the 1800s but this role had diminished significantly in the late 20th century and early 21st century as companies moved to offshore locations for these activities.
Lehigh Valley also is considered part of the historic Pennsylvania Dutch Country.
The three counties in the Metropolitan area are Carbon, Lehigh and Northampton.