Lacey Township is a township in Ocean County, New Jersey and is considered part of the Jersey Shore region. As of the 2010 United States Census, the township's population was 27,644, reflecting an increase of 2,298 (+9.1%) from the 25,346 counted in the 2000 Census, which had in turn increased by 3,205 (+14.5%) from the 22,141 counted in the 1990 Census. The 2010 population was the highest recorded in any decennial census. It was named for Continental Army General John Lacey.