Investigators say the three suspects, who were wearing black masks and armed with handguns, broke into a home in the 3600 block of North 13th Street around 3:30 a.m. Sunday.
Police say the men threatened the homeowners and then ran off with the money.
No injuries were reported.
Police are still searching for the suspects.
Anyone with any information is asked to call police at 215-686-TIPS.