Sicklerville is an unincorporated community located within Winslow Township in Camden County, New Jersey, United States. It was founded in 1851 by John Sickler, who lived in the area when the present-day town was located within Gloucester Township. The area is served as United States Postal Service ZIP Code 08081.
In 1874, the Sicklerville Post Office was established. Paul H. Sickler (his descendants still live in Winslow Township) was appointed the first Postmaster. Today, the Post Office is located near the original location on Sicklerville Road. The post office also services contiguous addresses in portions of Gloucester Township and Washington Township.
Sicklerville was founded as "Sickler Town". In 1886, there were only ten residences in Sicklerville.
At the 2010 census, there were 50,589 people, 17,007 households, and 13,209 families living in the town. The population density was 1,900 people per square mile (156.0/km²).