"The Chathams" is a term used in reference to shared services for two neighboring municipalities in Morris County, New Jersey, United States – Chatham Borough and Chatham Township. The two are separate municipalities. The first, a town that was settled in 1710 as a colonial English village in the Province of New Jersey, that in 1773 adopted a name change to "Chatham". There are numerous references to this village as "Chatham, New Jersey" dating from that time.
The second, more southern, without a town center, and less densely populated, is the vestige of a regional government that was formed in 1806 as a township, a form of municipal government peculiar to the state of New Jersey. It had jurisdiction over a region including a large area of open space and several villages. One of those, the village of Chatham, dating from 1710, was the source for its name, Chatham Township.
Chatham Township shares various joint public services with Chatham Borough: the school district, the library, the municipal court, the medical emergency squad, and recreation program.