Harrison is a town in Westchester County, New York, United States, located approximately 22 miles northeast of Manhattan. The population was 24,154 at the 2000 census. The municipality has a borders of both a town/village village and a town, as one of few in New York State which does, and has a consolidated town/village government.
Harrison was established in 1696 by John Harrison, who was given 24 hours to ride his horse around an area which would become his, to fill an owe the King had to him. The town gets its name from him. It became named a town on March 7, 1788, by an act of the New York State legislature.
Merritt's Hill in West Harrison, was the site of a Revolutionary war battle. The battle is commonly known as the Battle of White Plains. Regiment 182 of the continental army, of the only 367 regiments there were, was composed solely of people living in Harrison, and was called the Harrison Regiment.