Princeton, New Jersey is a community located in Mercer County, New Jersey, United States. Princeton University has been sited in the community since 1756. Princeton was named #15 of the top 100 towns in the United States to Live and Work In by Money Magazine in 2005. Although residents of Princeton (Princetonians) traditionally have a strong community-wide identity, the community is composed of two separate municipalities: a township and a borough. The central borough is completely surrounded by the township. The Borough seceded from the Township in 1894 in a dispute over school taxes; the two municipalities later formed the Princeton Regional Schools, and some other public services are conducted together. There have been three referenda proposing to reunite the two Princetons, but they have all been narrowly defeated. The Borough contains Nassau Street, the main commercial street, most of the University campus, and incorporated most of the urban area until the postwar suburbanization. Borough and Township now have roughly equal populations, together approaching 30,000.