Montgomery Township is a township in southern Somerset County, New Jersey, United States. It is located in the New York Metropolitan Area. As of the 2020 United States Census, the township’s population was 23,690, representing a 6.5% increase from the 22,354 enumerated at the 2010 United States Census, which in turn reflected an increase of 4,773 (+27.3%) from the 17,481 counted at the 2000 Census. Montgomery Township was incorporated on February 21, 1798, as one of New Jersey's initial group of 104 townships by an act of the New Jersey Legislature, from what remained of Western precinct. Portions of the township were taken to form Princeton Borough (February 11, 1813, in Mercer County, consolidated to form Princeton as of January 1, 2013), Princeton Township (April 9, 1838, also now consolidated into Princeton) and Rocky Hill (December 18, 1889). The township has been one of the state's highest-income communities. Based on data from the American Community Survey for 2013–2017, Montgomery Township residents had a median household income of $180,660, ranked 2nd in the state among municipalities with more than 10,000 residents, more than double the statewide median of $76,475. From Wikipedia