Permanently on display in the second-floor galleries is a highly regarded collection of tableware, sanitary ware and artware produced in the 19th and 20th centuries by Trenton's prolific ceramics industry. Also on display is a period Victorian room representing an Ellarslie parlor as it may have looked when the building was a private residence in the 1860s. The museum also boasts a fascinating collection of fine arts, decorative arts, industrial memorabilia and historical objects, displayed on a rotating basis in the remaining second-floor galleries.
The first floor galleries are host to changing exhibitions of contemporary art in all media, where visitors enjoy a diverse and exciting visual experience throughout the year. In addition to exhibitions, the museum hosts many special events, musical programs, and art classes. The Trenton City Museum also hosts an annual juried exhibition, the Ellarslie Open, which highlights the abundance of regional artistic talent. This exhibit provides visitors with an opportunity to view the finest regional work from the New York, New Jersey and Pennsylvania area, as well as work from as far away as California.