Greenville has neither cities nor villages, and most of the communities are small clusters of houses.

(Residents of the town get their mail through the Port Jervis or Middletown post office.)

Greenville is near Exit 4 off Interstate 84, which features the town's firehouse and a few other businesses.

Construction began in 1754, then ceased when money from the Crown was revoked.

There were 1,365 housing units at an average density of 45.1 per square mile (17.4/km2).

14.1% of all households were made up of individuals, and 4.9% had someone living alone who was 65 years of age or older.