The victims were identified as 33-year-old Jesus Valle Jr., 51-year-old Gennady Levshetz, 33-year-old Trevor Wetselaar, 57-year-old Dana Walk and 50-year-old Dale Hudson.
All victims were employees of the brewery.
Police identified the suspected gunman as 51-year-old Anthony Ferrill.
On Thursday, Milwaukee police continued to investigate why Ferrill, who was a Molson Coors electrician, killed five colleagues before taking his own life.
A prayer vigil was held Thursday night for the five victims and their families.
"Just trying to digest what happened. A lot of pain, a lot of praying going on," said Tim Eger, who attended the vigil.
"They were powerhouse operators. They were machinists, and they were electricians. But more importantly, they were husbands. They were fathers, and they were friends. They were part of the fabric of our company and our community and we will miss them terribly," said Molson Coors CEO Gavin Hattersley.
Ferrill's neighbors expressed disbelief that he was the shooter.
"I couldn't believe it was him," said resident Elizabeth Lapine. "There's something that triggered him at work to make him do it. He must've been very angry. He'd give you the shirt off his back."
His neighbors are mourning too, and said Ferrill is misunderstood.
"My whole family liked him. He is a very nice man," Lapine said.
The former MillerCoors Brewery changed names in 2019 to Molson Coors, but its history remains the same. It's been part of the fabric of the Milwaukee community for 165 years.
"For over a century and a half, they have been part of the fabric of this community and they have been there for us and it's now time for us to be for them as well," said Milwaukee Mayor Tom Barrett.
Milwaukee clothing company Brew City Brand printed "Miller Strong" T-shirts for brewery employees and their families.
Saz's, a popular restaurant near Molson Coors, is donating sales of certain menu items to the victims' families.
"We are all sad being right down the block from the brewery," said Curt Kluth, CFO of Saz's Hospitality Group.
Milwaukee's mayor urged residents to support one another during a press conference Thursday.
"What's most important right now is we as a community come together, and put our arms around these grieving families," Barrett said.
WATCH: Milwaukee mayor, Wisconsin governor and lieutenant governor speak after mass shooting at Molson Coors
"The hearts of the people of Wisconsin go out to the folks who were murdered at Miller Coors this afternoon," Wisconsin Governor Tony Evers said on Wednesday. "The first lady and I will be praying tonight together over the lives that have been lost."
Lieutenant Governor Mandela Barnes noted this is the 11th mass shooting in Wisconsin since 2004, and called on Americans to prevent it from happening again.
"I also want to issue a call, a challenge, because we shouldn't accept this," Barnes said. "This is not the way that things should be, and we should never grow comfortable in the face of these repeated tragedies all across America, and especially right here at home. We have a duty to act."
On Wednesday night, police worked their way building by building on the sprawling complex, which includes a mix of corporate offices and brewing facilities. At least 600 people work at the complex.
Thursday morning, people left flowers at the scene in remembrance of the victims.
Molson Coors CEO Gavin Hattersley said the Milwaukee office will be closed for the remainder of the week, and the brewery will be shut down for the time being as well "to ensure our people have time to cope with today's events."
WATCH: Houston Molson Coors annual conference canceled after Milwaukee mass shooting
Many employees of the company, including the executive leadership, were at the company's annual conference underway in Houston. That conference has now been canceled and people were flying back to Wisconsin Wednesday night.
President Donald Trump also addressed the mass shooting at the beginning of a press conference about novel coronavirus in the U.S. on Wednesday.
"Our hearts break for them and their loved ones," Trump said. "We send our condolences. We will be with them and it's a terrible thing. Terrible thing. So our hearts go out to the people of Wisconsin and to the families. Thank you very much."
The Ridge Community Church is planning to hold a vigil at its Greenfield campus, 4500 S. 108th St. A spokesperson for the church said several of its members work at the Molson Coors facility.
The Associated Press contributed to this report.