[9] The name "Succasunna" comes from the Lenni Lenape Native American word for "land of black stones", most likely due to the rich iron ore deposits in the area.

The Morris Canal was an important transportation link in the iron industry around Succasunna, carrying coal to iron-ore producing areas all over northern New Jersey.

The Western Electric model 1ESS system was cut over for service on the New Jersey Bell 584 central office on May 30, 1965.

A commemorative plaque on the wall of the central office building notes this historic event.

[12] Succasunna is in western Morris County and occupies the southern portion of Roxbury Township.

The Morristown and Erie Railway runs rail freight service through the area two to five times per week on its High Bridge Branch.

[1] The community is drained by the Lamington River, which forms the southeast border of the CDP and is a tributary of the North Branch of the Raritan River, and by Drakes Brook, which flows southwest out of the community and is a tributary of the South Branch of the Raritan.