Sparta is a township in Sussex County in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 19,600, a decrease of 122 (−0.6%) from the 2010 census count of 19,722, which in turn reflected an increase of 1,642 (+9.1%) from the 18,080 counted in the 2000 census. Sparta was organized as a township by an act of the New Jersey Legislature on April 14, 1845, from portions of Byram Township, Frankford Township, Hardyston Township and (the now-defunct) Newton Township. The township was named after the existing community of Sparta, which had been settled and named years before, the name likely coming from Sparta, Greece. Ogdensburg borough was incorporated on February 26, 1914, from portions of Sparta Township. The township was listed as the safest place in New Jersey as well as the seventh safest municipality in the nation according to a 2022 crime statistic compilation from Safewise.com. From Wikipedia