These unwelcome NYCHA residents aren’t getting evicted any time soon.

The embattled housing authority admitted Thursday it will blow a federally imposed deadline to slash the rat population that’s terrorizing tenants in 70,000 units.

NYCHA is supposed to have the infestation cleared up by the end of the month, but acknowledged it still doesn’t have the staff to get it done — infuriating residents who will have to keep living with the scourge.

“[Mayor] De Blasio tells us, ‘We are going to fix this,’ ” said Manuel Medina, 80, a resident at East Harlem’s Washington Houses.

“He’s supposed to keep our homes livable and it’s not happening. The rats are taking over. I have no peace of mind under my roof.”

The disclosure comes after federal monitor Bart Schwartz revealed that NYCHA only has 108 pest exterminators on staff — and would need to hire at least another 850 to meet the deadlines imposed by the legal settlement that left the authority under partial federal control.

The January 2019 agreement required that NYCHA come up with a list of apartments where residents reported rat problems at least twice in the last 12 months by August, including in neighboring units and common areas. Officials came back with a list of 71,394 units that fit the criteria.

It then required that NYCHA tackle the rat problem in those places within 30 days of coming up with the list — something Schwartz said would be impossible with the authority’s current staffing.

“In light of this backlog and its existing headcount, NYCHA [needs] … at a minimum 853 additional exterminators to immediately meet this second 30-day targeted relief obligation under the Agreement,” Schwartz’s first report disclosed in a footnote.

At the Washington Houses — where residents wrote top NYCHA officials a letter complaining about a rampant rat infestation — Medina said he sees the vermin almost daily.

“The garbage compact has been closed for a year and the employees are scared to go down because of the rats — they’re beat up by the critters,” he said.

NYCHA officials insisted they’re making headway in the war on pests and are working with the feds on a new schedule.

“HUD and the federal monitor are aware of the progress NYCHA has made to date,” said the agency’s general manager, Vito Mustaciuolo. “We are also working to increase staff with the required certifications we need to successfully implement our plan.”

The deadline was one of dozens set for the authority by the January deal, which experts and tenants have said that NYCHA will struggle to meet.

The settlement and deadlines sprang from a bombshell June 2018 lawsuit brought by federal prosecutors, who alleged NYCHA lied for years about conducting lead inspections and sought to cover up dangerous living conditions in the city’s public housing developments.

More than 400,000 working-class New Yorkers and seniors call the authority’s 316 projects home.

NYCHA first disclosed the failure to meet the deadline to The City, a nonprofit news website.