Incorporated in 1928, the Township of East Hanover covers an area of 8.2 square miles. It is 25 miles west of New York City and 15 miles west of the City of Newark. The Passaic River is on its Eastern border and the Whippany River is on its Western side. Parsippany, Troy Hills, Florham Park, Hanover Township (Whippany), Roseland, Livingston and Montville are the municipalities adjacent to East Hanover. Routes 10 and 280 are major arteries which pass through East Hanover along with Eagle Rock Avenue. Largely developed, East Hanover is proud of the major corporations located here in addition to more than 2100 other business enterprises operating in industrial parks, contemporary office complexes, and retail stores.

Route 10 is one of the finest shopping areas in New Jersey. Mount Pleasant Avenue contains a historical district, which has been placed in the Congressional Record. The First Presbyterian Church and its adjoining graveyard date back to the Revolutionary War. Many American Indian artifacts have been discovered in various parts of East Hanover.