Prospertown is an unincorporated community located within the New Jersey townships of Jackson and Plumsted in Ocean County and Upper Freehold in Monmouth County.

[2][3] The community is home to Prospertown Lake and is adjacent to Six Flags Great Adventure, both located on Monmouth Road (CR 537).

[4] Prospertown was once a settlement, consisting of a hotel, several homes, and a gristmill.

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