Augusta is an unincorporated community located within Frankford Township, in Sussex County, New Jersey, United States.

[1] Augusta is the home of the New Jersey State Fair and the Sussex County Farm and Horse Show.

Augusta lies on top of the Ordovician Martinsburg Formation, created around 450 million B. C. when a volcanic chain of islands collided with the proto North American Plate.

Each year, thousands of trout are stocked in the Paulinskill River from the New Jersey Division of Fish and Wildlife.

A chain of hills leads Papakatkin Creek to travel east and then north into the Wallkill River.