Northampton County, Pennsylvania in the context of "Lehigh Valley"

Bethlehem is a city in the Northampton and Lehigh counties in the Lehigh Valley region of eastern Pennsylvania, United States. As of the 2020 census, Bethlehem had a total population of 75,781, making it the second-largest city in the Lehigh Valley after Allentown and the seventh-largest city in the state. Among its total population as of 2020, 55,639 were in Northampton County and 19,343 were in Lehigh County. The city is located along the Lehigh River, a 109-mile-long (175 km) tributary of the Delaware River.

Bethlehem lies in the geographic center of the Lehigh Valley, a metropolitan region of 731 sq mi (1,890 km) with a population of 861,899 people as of the 2020 census that is Pennsylvania's third-most populous metropolitan area and the 68th-most populated metropolitan area in the U.S. Bethlehem borders Allentown to its west and is 48 miles (77 km) north of Philadelphia and 72 miles (116 km) west of New York City.

Lehigh County (/ˈliːhaɪ/; Pennsylvania Dutch: Lechaa Kaundi) is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the county's population was 374,557. Its county seat is Allentown, the state's third-largest city after Philadelphia and Pittsburgh. The county is part of the Southeast region of the commonwealth.

Along with Northampton County to its east, the two counties combine to form the Lehigh Valley region of eastern Pennsylvania, the third-largest metropolitan area of Pennsylvania with a population of 861,889 as of 2020. Lehigh County is one of the fastest-growing counties in Pennsylvania and the more highly populated of the two counties. Both counties are part of the Philadelphia television market, the fourth-largest television market in the nation.

Allentown (Pennsylvania Dutch: Allenschteddel, Allenschtadt, or Ellsdaun) is a city in the U.S. state of Pennsylvania. It is the county seat of Lehigh County, and is the third-most populous city in Pennsylvania, with a population of 125,845 as of the 2020 census. It is also the most populous city in the Lehigh Valley metropolitan area of eastern Pennsylvania, which had a population of 861,899 and was the 68th-most populous metropolitan area in the nation as of 2020.

Founded in 1762, Allentown is located on the Lehigh River, a 109-mile-long (175 km) tributary of the Delaware River. It is the largest of three adjacent cities, including Bethlehem and Easton in Lehigh and Northampton counties, in the Lehigh Valley region. Allentown is located 48 miles (77 km) north of Philadelphia and 78 miles (126 km) west of New York City.

Northumberland County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 91,647. Its county seat is Sunbury. The county is part of the Central region of the commonwealth.

The county was formed in 1772 from parts of Lancaster, Berks, Bedford, Cumberland, and Northampton Counties and named for the county of Northumberland in northern England. Northumberland County is a fifth class county according to the Pennsylvania's County Code. Northumberland County comprises the Sunbury, Pennsylvania Micropolitan Statistical Area, which is also included in the Bloomsburg-Berwick-Sunbury, PA Combined Statistical Area. Among its notable residents are Thomas L. Hamer, a Democratic member of Congress in the 1830s, and Joseph Priestley, the Enlightenment chemist and theologian, who left England in 1796 due to religious and political persecution and settled on the Susquehanna River. His former house, originally purchased by chemists from Pennsylvania State University after a colloquium that founded the American Chemical Society, is a historical museum.

Monroe County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 168,327. Its county seat is Stroudsburg. The county is part of the Northeast Pennsylvania region of the state. The county was formed from sections of Northampton and Pike counties on April 1, 1836. It was named in honor of James Monroe, the fifth president of the United States.

The county borders Northampton County and the Lehigh Valley to its south, Pike and Wayne counties to its north, Carbon and Luzerne counties to its west, and the Delaware River and Warren County, New Jersey to its east. It is part of the New York metropolitan area, but also receives media from the Scranton/Wilkes-Barre and Philadelphia radio and television markets.

The Diocese of Allentown (Latin: Diœcesis Alanpolitana) is a diocese of the Catholic Church in the Lehigh Valley region of Pennsylvania in the United States. It is a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of Philadelphia. The mother church of the Diocese of Allentown is the Cathedral Church of Saint Catharine of Siena in Allentown. The bishop is Alfred A. Schlert.

The Diocese of Allentown covers Berks, Carbon, Lehigh, Northampton and Schuylkill counties. As of 2025, the diocese had a registered population of 205,000 served by 78 parishes.