Cementon, Pennsylvania
Census-designated place
Cementon in December 2012
Location of Cementon in Lehigh County, Pennsylvania
Cementon Location in of Cementon in Pennsylvania Show map of Pennsylvania Cementon Location in the United States Show map of the United States
Coordinates: 40°41′21″N 75°30′27″W / 40.68917°N 75.50750°W / 40.68917; -75.50750
Country	United States
State	Pennsylvania
County	Lehigh
Township	Whitehall
Area [1]
• Census-designated place	0.67 sq mi (1.74 km2)
• Land	0.65 sq mi (1.69 km2)
• Water	0.02 sq mi (0.05 km2)
Elevation	315 ft (96 m)
Population  (2020)[2]
• Census-designated place	1,657
• Density	2,545.31/sq mi (983.32/km2)
• Metro	865,310 (US: 68th)
Time zone	UTC-5 (Eastern (EST))
• Summer (DST)	UTC-4 (EDT)
ZIP Code	18052
Area code(s)	610 and 484
FIPS code	42-11976
GNIS feature ID	1171410

Cementon is an unincorporated area and census-designated place (CDP) in Lehigh County, Pennsylvania. The town is in Whitehall Township, 7 miles (11 km) north of Allentown. As of the 2020 census, the population of Cementon was 1,657. Cementon is part of the Lehigh Valley metropolitan area, which had a population of 861,899 and was the 68th-most populous metropolitan area in the U.S. as of 2020. It uses the Whitehall Township ZIP Code of 18052.

Cementon is in northeastern Lehigh County, Pennsylvania situated along the Lehigh River across from Northampton in Northampton County. It is bordered to the west by the unincorporated community of Egypt. Pennsylvania Route 329 passes through the center of Cementon, crossing the Lehigh east into Northampton and leading west through Egypt to Neffs. Pennsylvania Route 145 forms the western boundary of Cementon, crossing PA 329 in the Eagle Point neighborhood. PA 145 leads northwest 8 miles (13 km) to Walnutport and south to the center of Allentown.

According to the U.S. Census Bureau, Cementon has a total area of 0.66 square miles (1.7 km²), of which 0.02 square miles (0.05 km²), or 2.94%, are water.^[3] The town is part of the Delaware River watershed.

Cementon was originally known as "Siegfried's Ferry" as it is located directly across the Lehigh River from Siegfried, one of the three villages that would merge to become Northampton in 1902. In 1828, a bridge was built across the river, and the town became known as Siegfried's Bridge. After a large Whitehall Portland Cement Works quarry and mill were established in 1900–01, the town was renamed "Cementon".^[5]

Cementon is part of the Whitehall-Coplay School District. Students in grades nine through 12 attend Whitehall High School.

Wikimedia Commons has media related to Cementon, Pennsylvania.

• Roberts, Charles Rhoads; Rev. John Baer Stoudt; Rev. Thomas H. Krick; William J. Dietrich (1914). History of Lehigh County Pennsylvania and Genealogical and Biographical Records of its Families. Vol. 1. Lehigh Valley Publishing Company.
• Roberts, Charles R. (1936). "Place Names of Lehigh County and Their Origin". Proceedings: Lehigh County Historical Society. Allentown, Pennsylvania: Lehigh County Historical Society.