The greater part of Cumberland is Peaslee Wildlife Management Area, New Jersey's second-largest game reserve.

[7] Like other small communities located within Maurice River Township, Cumberland's exact boundaries are unspecified.

It does not possess its own ZIP code and is processes it mail through the 08332 Millville United States Post Office.

Extensive research of historical deeds and other documents located at the Cumberland County Court House dating back several hundred years would be necessary in order to establish the exact boundaries of the town.

[3] The pond was originally created to provide power for the Cumberland Iron Furnace, which no longer exists.