Frelinghuysen Township, New Jersey
Frelinghuysen Township () is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 2,199, a decrease of 31 (−1.4%) from the 2010 census count of 2,230, which in turn reflected an increase of 147 (+7.1%) from the 2,083 counted in the 2000 census. History Frelinghuysen Township was incorporated from portions of Hardwick Township on March 7, 1848. According to the book Historical Sites of Warren County, the township was named for Theodorus Jacobus Frelinghuysen, a minister and theologian of the Dutch Reformed Church who came to New Jersey in 1720. Theodorus was the grandfather of Theodore Frelinghuysen, the noted statesman, educator and running mate of presidential candidate Henry Clay on the Whig Party ticket in the 1844 election, who is also credited as the inspiration for the township's name. Geography According to the United States Census Bureau, the township had a total area of 23.87 square miles (61.83 km2), including 23.62 square miles (61.18 km2) of land and 0.25 square miles (0.65 km2) of water (1.04%). Johnsonburg (with a 2010 Census population of 101) and Marksboro (population of 82 in 2010) are unincorporated communities and census-designated