WASHINGTON — Turns out, Rep. Alexandria Ocasio-Cortez is a frugal socialist.

The freshman Democrat spent the least amount of money of the 27 New York House members during the first three months of 2019, according to newly released spending reports of congressional offices reviewed by The Post.

Ocasio-Cortez (D-Queens/Bronx) spent $199,198 on staff salaries, travel, rent for her district office and other office supplies.

It helped that she took two months to open her only district office and she remains understaffed.

Meanwhile, the top spender in the New York delegation was Rep. Hakeem Jeffries, the No. 5 Democrat in the House.

His office expenses totaled $341,585 for the first quarter of the year.

Another freshman member, Rep. Antonio Delgado of the Hudson Valley, spent $223,602 this quarter, the second lowest of the bunch.

Ocasio-Cortez’s spokesman Corbin Trent said the lean budget was by design.

“There’s no question,” he told The Post. “We squeeze the most out of every dime or dollar for sure.”

Ociasio-Cortez had an advantage in that she’s only paying rent for one district office.

Among the 27 members from New York, eight have just one office outside DC, while the rest of the delegation has between two and four.

Jeffries has two fully staffed offices on both sides of his district. “Congressman Jeffries has designed a constituent-focused operation. We have two New York offices – which helps the community with issues like Medicare, Social Security and housing – and one D.C. office, which works on legislation. We host free community events such as Congress on Your Corner and our annual State of the District Address,” said Jeffries’ spokesman Michael Hardaway.

With the average allowance for House members standing at $1,353,275 annually, according to the Congressional Management Association, Jeffries’ spending level – while the highest in the delegation – is on pace with what’s appropriate for lawmakers to spend.

“We have put forth the resources necessary to properly serve the people of the Eighth Congressional District,” Hardaway added.

Ocasio-Cortez caught flak for being the only new New York House member not to have a district office in place weeks after she assumed her duties. It finally opened in March, while she assumed her duties in January. She now has one in Queens.

Trent said Ocasio-Cortez still plans to open a second office in the Bronx.

The bigger savings comes from Ocasio-Cortez’s staff pay.

While Jeffries spent about $9,000 more on rent, communications and utilities than Ocasio-Cortez this quarter, he spent almost $90,000 more on salaries.

Ocasio-Cortez has 13 staffers and two paid interns listed on her first-quarter filings.

House offices can have up to 18 full-time employees and four part-time employees on the payroll at any time.

Notably, the bulk of AOC’s staffers are working out of D.C.

Trent said the congresswoman does plan to get up to the 18. “We’re continuing to hire really capable, quality people,” he said.

But while Jeffries’ chief of staff will make around $132,000 this year, AOC’s is on track to make just above $50,000.

The median chief of staff salary is about $158,000, according to an analysis by Legistorm.

AOC’s Chief of Staff Saikat Chakrabarti also stands out in that he’s independently wealthy, having graduated from Harvard, spent time on Wall Street and then made millions in Silicon Valley.

She’s pledged that her aides will all make more than $52,000 a year and has said nobody on staff will make more than $80,000. Right now, her highest-earning staffers will take in about $65,000 this year.

Only one-quarter of a congressional aide’s annual salary is shown on these reports and staffers are often awarded bonuses at the end of the year.

The average freshman member of the House spends $1,127,537 in his or her first year, according to the 2018 edition of “Setting Course: A Congressional Management Guide,” a resource produced by the Congressional Management Foundation.

While members could be on the hook for going over budget, offices that come in under don’t necessarily save taxpayers money. Instead those funds go to other members.