Tourism to New Jersey's Hamilton-related historical sites is on the rise because of the popular musical. A list of Revolutionary War sites in Hamilton, New Jersey. Hamilton remained a small provincial centre until the draining of the surrounding Waikato swamps, after which point it grew as a service centre for the region’s developing dairy farms. covid-19 cases reported in hamilton township as of 4/13/2020: 389 total positive cases. for the most up-to-date information visit covid19.nj… Hamilton Square Genealogy (in Mercer County, NJ) USA (1,015,348) > New Jersey (13,532) > Mercer County (866) > Hamilton Square (8). Alexander Hamilton spent a lot of time in New Jersey, including his final moments. Note: This page primarily lists records kept at the city level. The historic sites in Hamilton NJ include the John Abbot II House and the Isaac Pearson House. Hamilton was established in 1864 by the 4th Waikato militia as an administrative and commercial centre, and a refuge for outlying settlers in case of renewed war against nearby Kingitanga forces. 14 deaths. 65 recoveries . Additional records are listed on the county and state pages.