Trump has visited the resort six times since his inauguration, and is planning to return this weekend to celebrate the Easter holiday.
The county is hoping the federal government will eventually reimburse its costs.
Lawmakers anxious about the rising costs have proposed rezoning the oceanfront club into a special tax district with rules requiring it to pay for the president's visits. The county has spent nearly $2 million since January.
The Coast Guard's budget is only a fraction of the government money spent toward protecting the president's estate. And it receives a tax break because Trump surrendered development rights after buying the property in 1985 for $10 million.
The Secret Service shutters it every time Trump visits Mar-a-Lago because agents believe the 350 flights it handles daily pose a security risk. Estimates on how much it costs to protect the just the two of them range between $127,000 and $149,000 per day. He spent several weekends with his family at Camp David, the presidential retreat in the Catoctin Mountains of Maryland, and returned to Chicago for a weekend at his private home.
"If you're in the White House, who wants to take a vacation?" he once asked a campaign crowd in Spencer, Iowa.
The cost of Trump's summit with President Xi hit hard on a local level, with the Palm Beach County community footing the bill, an estimated $1.5 million for Thursday and Friday's U.S.
President Donald Trump, through his Trump Organization, owns or operates 17 different golf courses around the world, including 12 in the United States, two in Dubai, one in Ireland and two in Scotland. Several times, protesters have lined the route of Trump's motorcade from PBIA to Mar-a-Lago and also gathered at other spots, city police Sgt. David Lefont said.
Trump's latest visit to his tropical White House was the most historically significant of his presidency so far.
In the past Mar-a-Lago staffers have said they do not keep a detailed visitor log, something critics argue might constitute a serious national security issue.
According to the Secret Service temporary road closures and adjusted traffic patterns around the Winter White House will be in place through Sunday evening. Tom Udall (D-N.M.) said in March after demanding the resort begin logging guests.