The company announced to employees that it had filed for bankruptcy.
"It's so fresh, it's so fresh, it's shocking. We need a second," said Lauren Brown, a now-former employee of the Center City location.
The closure on Market Street is part of a broader shutdown across the entire Iron Hill chain, which includes 15 breweries in multiple states.
The company cited financial difficulties in a message to staff: "Due to ongoing financial challenges, the company has made the difficult decision to file for bankruptcy and regrettably will be permanently closing its doors."
Jordan Corporal says both he and his girlfriend lost their jobs without warning.
"It is an uprooting, I guess, trying to figure out where to go from here," Corporal said.
Earlier this month, three other Iron Hill locations closed with little warning.
"Basically, the thing that happened with the other locations a few weeks ago. The same thing happened here."
Some believe the brewery may have expanded too quickly.
"I'm thinking they just bit off more than they could chew," Brown said.
Customers were also caught off guard by the sudden closure.
"It be jammed packed in here. I'm very surprised," said Sam Jenkins of Pennsauken. He and his wife would visit every time they came into the area.
Iron Hill Brewery operated locations in Pennsylvania, New Jersey, Delaware, Georgia and South Carolina.
The company has not responded to Action News' requests for comment.