It happened around 2:30 Saturday morning on the 1400 block of Norris Street.
Arriving crews were met with heavy smoke which quickly turned over to flames and spread to the second floor.
Smoke also spread to the adjoining home.
Firefighters were able to bring the fire under control.
Between both homes, seven people were displaced. They were also taken to Virtua Hospital as a precaution.
The cause of the fire is not yet known.