US Rep. Alexandria Ocasio-Cortez scrambled Sunday to explain why neighbors at her listed Bronx address never saw her there — and ended up claiming she recently relocated to a larger place nearby.

The day after The Post reported that residents said they had never seen her around — and she ducked questions about it after an appearance — her spokesman said the Democratic freshman congresswoman now lives with her boyfriend in a two-bedroom apartment “a block and a half away.’’

The pair relocated there earlier this month, he said.

“She lives in the same neighborhood she’s lived in for years,” said the spokesman, Corbin Trent. “She is not living in the exact same condo.’’

The recent move still didn’t explain why residents at her previous digs — a one-bedroom Bronx condo owned by her mom — insisted they had never seen her there.

Members of Congress are required to have a residence in the state they represent.

Trent claimed that Ocasio-Cortez, 29, was at her new home Sunday afternoon, although he wouldn’t give the address.

Ocasio-Cortez, a former bartender-turned-progressive pacesetter, ducked questions about her residence after an appearance Saturday in Queens. She told The Post to wait for her to pose for a photograph — then slipped out a back door and into a waiting SUV.

Ocasio-Cortez previously claimed that she has lived since 2011 in a mortgage-free, fourth-floor condo in Parkchester, which according to records was bought by her dad, Sergio Ocasio, who died in 2008.

After The Post reported a next-door neighbor and another fourth-floor resident saying they have never seen the self-proclaimed socialist living there, Trent denied the residents’ claims, saying her family’s apartment “was home, period, for her,’’ according to the Daily Mail.

“That’s where she gets her energy, her drive. She not only lives there, that’s where her heart’s at, period,” Trent told the Mail, which added that he was talking about the family’s condo.

Yet even a third resident of the fourth floor there, who gave her name as Ms. Gonazales, told The Post on Sunday that she had never seen Ocasio-Cortez there.

Later in the day, Trent then claimed to The Post that the Mail got it wrong and that his comments to the site had been referring to the Bronx in general. Still, asked if he had been misquoted, Trent would only say the Mail might have been “mistaken.’’ He did not respond to a question about whether he would ask for a retraction.

Trent said he was “uncertain” if his boss has changed her address on her voter registration form.

Ocasio-Cortez made headlines in November when she claimed she couldn’t afford an apartment in Washington, DC, after her unexpected primary victory over 10-term incumbent Joseph Crowley because she wasn’t yet drawing her $174,000-a-year congressional salary.

Earlier this month, the Washington Free Beacon revealed that Ocasio -Cortez had moved into a luxury apartment building in DC’s Navy Yard neighborhood.

Trent said Ocasio-Cortez was no longer short of cash because “she has been paid now,” and that she and boyfriend Riley Roberts “are able to manage” the costs of maintaining two homes.

Additional reporting by C.J. Sullivan