High Quality Content by WIKIPEDIA articles! North Brunswick Township is a township in Middlesex County, New Jersey, United States. At the 2010 United States Census, the population was 40,742, reflecting an increase of 4,455 (+12.3%) from the 36,287 counted in the 2000 Census, which had in turn increased by 5,000 (+16.0%) from the 31,287 counted in the 1990 Census. North Brunswick was named for neighboring South Brunswick, New Jersey, The "Brunswick" comes from New Brunswick, which was named after the German city of Braunschweig (formerly translated in English as Brunswick) or for the British royal House of Brunswick. North and South Brunswick, in turn, became the namesakes for East Brunswick.