Ithaca. For the City of Ithaca or Ithaca as a whole, see Ithaca, New York.Ithaca is a town in Tompkins County, New York, United States. The population was 18,198 at the 2000 census.The Town of Ithaca is a horseshoe-shaped portion of the metropolitan area of Ithaca, New York. It surrounds the City of Ithaca and is the City's only border, although the City has a completely separate government, and is not part of the town. The two entities form a single community for most practical purposes, for instance, sharing a local school district and many municipal services. Many of the Town's government offices, such as the Town hall, are located within the City, outside of the Town's jurisdiction.Ithaca College is in the town, south of the city center. The main campus of Cornell University is located just to the east, partly in the City and partly in the Town.The Town Supervisor of Ithaca is Herb Engman.The Town Board has 6 members who are elected at-large to 4-year terms.