Pittstown is an unincorporated area within portions of Alexandria Township and Franklin Township in Hunterdon County, New Jersey, United States, named after William Pitt. The area is served as United States Postal Service ZIP Code 08867. The area was named Hofftown in the 18th century after landowner Lawrence Hoff. As of the United States Census, 2000, the population for ZIP Code Tabulation Area (ZCTA) 08867 was 4,384. Pittstown is located at 40°34′55″N 74°57′33″W﻿ / ﻿40.58194°N 74.95917°W﻿ / 40.58194; -74.95917Coordinates: 40°34′55″N 74°57′33″W﻿ / ﻿40.58194°N 74.95917°W﻿ / 40.58194; -74.95917.