The Phillipsburg Historical Society has a three-room library, museum, and office in the lower level of the Municipal Building at 675 Corliss Avenue, in Phillipsburg. Its purpose is to discover, collect, publish and/or preserve anything deemed to be of historical significance to the Phillipsburg area.

The first room, as one enters the facility, is the organization's historical library with a wide selection of books relating to the town and its surrounding area. There are numerous Morris Canal books here - Phillipsburg is the location where, in 1824, the canal began - and similar sources dealing with the Delaware River, or covering such industrial local giants as Ingersoll-Rand, Andover Iron Company, and Warren Foundry. Many of the documents and maps date back to the last century. The room also contains a genealogical collection listing a large number of local families, copies of the publication Genealogical Magazine of New Jersery, and other genealogical publications The place has an extensive photographic collection with a major contribution by local photographer and historian, Ron Wynkoop.

The second room contains some 37 vertical file drawers and 10 large horizontal file drawers which contain a vast amount of local information. Old tax maps are here as well as large and growing collections of many newspapers that serviced the area. A good-sized table occupies the center of the room for the convenience of working historians.

The third room is a storage room containing a sizeable amount of material that needs inspection, classification, and filing.