As the government shutdown drags on, millions of Americans — including about 1.8 million New Yorkers — have seen their Supplemental Nutrition Assistance Program, or SNAP, benefits suspended, leaving many struggling to afford groceries.

“I get my food stamps today, but I checked my card and there was nothing on there,” said Doris Kincaid, 81, who lives in Queens. “I really need food in my house, and the money I’m getting now, I’m taking my bill money. And I have to pay my rent.”

For Kincaid and others who rely on SNAP to make ends meet, the loss of benefits has forced them to seek help from food pantries and community groups.

In Queens, lines for free food have doubled in recent days outside the Jacob Riis Neighborhood Settlement, the community center for Queensbridge Houses — the largest public housing development in the country.

The nonprofit ReThink Food partnered with elected leaders to organize a food distribution event there Monday, responding to the growing demand.

“I don’t think people realize how many people depend on SNAP,” said Matt Jozwiak, founder and CEO of ReThink Food. “It’s about one in six New Yorkers. It’s $25 million worth of food support every single day.”

The need is also surging in Brooklyn, where the nonprofit Met Council on Jewish Poverty opened a new warehouse and food pantry in Canarsie on Monday.

“It’s going to supply 200 food pantries across New York City, but we’re also opening a food pantry right here in the warehouse,” said Met Council CEO David Greenfield. “This is a predominantly low-income, minority community, and the need is tremendous.”

But Greenfield said no charity can replace the scale of SNAP.

“The government has failed us,” he said. “We need everyone to step up, look out for your neighbors.”

At the Jacob Riis center, staff say they are now giving away three times as much food as usual since the shutdown began.

“It’s kids, old people, old people like me,” Kincaid said. “And they need their food stamps.”