Zohran Mamdani, a proud socialist, has raised almost one million dollars in donations in the last couple of months as he continues to build momentum in his unexpected bid for mayor of New York City.

The 33-year-old Queens state Assembly member’s campaign reported collecting around $845,000, with the majority of the haul coming from New Yorkers in all five boroughs.

“We have the momentum, the movement and the money to win,” Mamdani said in a statement.

More than $500,000 of the cash raised since January is eligible for the city’s eight-to-one matching funds program, the campaign said — meaning the lefty candidate is set to get $4 million in taxpayer cash next month.

Mamdani’s haul was second only to ex-Governor Andrew Cuomo, who led the field of candidates for the June Democratic primary, bringing in a whopping $1.5 million since announcing his candidacy on March 1.

He is expected to qualify for over $4 million in matching funds next month.

Mamdani — whose socialist platform centers on free public transit, childcare, rent freezing for millions of city dwellers and opening city-run food stores — emphasized the strife of New Yorkers in an exclusive interview with The Post last week.

“We have a North Star, that is all driven by the belief that working-class New Yorkers cannot afford to worry about anything beyond cost, because it’s cost that is pushing them out of the city that they love,” Mamdani said.

His campaign boasted that it got donations from more than 16,000 people, 73% of them Big Apple residents during during the latest fundraising period — which took place between Jan. 11 and March 13.

Mamdani drastically outperformed City Comptroller Brad Lander and ex-Comptroller Scott Stringer in this reporting period — with Lander bringing in $227,867 and Stringer raising $186,986.

That fundraising success has also translated into promising poll numbers for the relatively unknown anti-Israel lawmaker.

Just last month, one survey had Mamdani going seven rounds with the early frontrunner, Cuomo, and Lander.

Still, the money margins are thin between Mamdani, Lander, and Stringer who have been in the mayoral race for the long haul compared to recent entrants Cuomo and Council Speaker Adrienne Adams.

Lander’s team said he was rapidly approaching the $8.3 million spending cap, having raised over $6.7 million total since announcing his candidacy — and Stringer has recently surpassed $5 million raised for his campaign, including matching funds.

Incumbent Mayor Eric Adams has been denied matching public funds due to his ongoing controversies and federal indictments but still has millions on hand to cash in. However, it was not immediately known how he made out with his latest haul.

Meanwhile, Adrienne Adams‘ campaign coffers lag in comparison. She raised $128,000 in her first week of campaigning — falling far short of qualifying for any matching funds, which won’t be available for her until mid-May at earliest.