Riegelsville is an unincorporated community located in Pohatcong Township in Warren County, New Jersey.

[1][2] It is connected to Riegelsville, Pennsylvania across the Delaware River by the Riegelsville Bridge at the confluence of the Musconetcong River with the Delaware River.

[3] The Riegelsville Company Town Historic District encompassing the community was listed in the New Jersey Register of Historic Places in 1998.

[4] NJ County Route 627, also known as Riegelsville Milford Road and Riegelsville Warren Glen Road, runs north-south through the community.

[5] A tourist railroad that operates on the Belvidere and Delaware River Railway terminates near the Riegelsville Bridge.