Hamilton Township is a township in Atlantic County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 27,484, an increase of 981 (+3.7%) from the 2010 census count of 26,503, which in turn reflected an increase of 6,004 (+29.3%) from the 20,499 counted in the 2000 census. The Township of Hamilton was incorporated by the New Jersey Legislature on February 5, 1813.

Atlantic County is a county located along the Jersey Shore in the U.S. state of New Jersey. As of the 2020 census, the county was the state's 15th-most-populous county, with a population of 274,534, a drop of 15 from the 2010 census count of 274,549. Its county seat is the Mays Landing section of Hamilton Township. The county is part of the South Jersey region of the state.