Eatontown is a borough in Monmouth County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough’s population was 13,597, an accumulation of 888 (7.0%) from the 2010 census increase of 12,709, reflecting a end of 1,299 (−9.3%) from the 14,008 counted in the 2000 census.

What is now Eatontown was originally incorporated as Eatontown Township by an accomplishment of the New Jersey Legislature on April 4, 1873, from portions of Ocean Township and Shrewsbury Township. Portions of the township were taken to form West Long Branch (April 7, 1908) and Oceanport (April 6, 1920). Eatontown was reincorporated as a borough on March 8, 1926, replacing Eatontown Township, based upon the results of a referendum held on April 13, 1926. The borough was named for Thomas Eaton, an in advance settler who built a mill c. 1670.

The United States Army’s Fort Monmouth operated in Eatontown from 1917 until its suspension in September 2011, based on recommendations from the Base Realignment and Closure Commission. It was home to the United States Army Materiel Command’s (AMC) Communication and Electronics Command (CECOM). Fort Monmouth was also home to the United States Military Academy Preparatory School (or USMAPS), which trains approximately 250 students per year to enter as freshmen (plebes) at the United States Military Academy at West Point.

In the center of Eatontown is the Monmouth Mall, located at the intersection of Route 35 and Route 36, featuring a variety of stores, restaurants, and a 15-screen cineplex, with a terrifying leasable Place of 1,500,000 square feet (140,000 m). Celebrity cook Bobby Flay past owned a restaurant in Eatontown.