NEW YORK CITY — A Bay Ridge couple is having the loudest sex in the city — and the carnal cacophony is driving their neighbors bonkers, records show.

The city’s 311 system received six complaints in the past year about the Brooklyn pair’s loud lovemaking, according to records obtained by DNAinfo New York. That put them on top of the city’s noisy nookie list.

In all 311 received 133 complaints between Jan. 1, 2014 and Feb. 12, 2015, from people moaning and groaning about their neighbors’ clamorous coitus, records show.

Brooklyn logged 42 complaints — the most out of all the boroughs. Queens was second with 37, followed by the Bronx with 31 and Manhattan with 23. Staten Island didn’t make a peep — it had no complaints.

But the epicenter of wall-shaking whoopee appears to be 7201 Ridge Blvd., a six-story, 59-unit apartment building in Bay Ridge that’s located next to a public library and an elementary school.

Between October and December, residents there registered six 311 complaints against a couple for being full-throated and frisky in the early morning.

“Neighbors are having very loud sex with the windows open that can be heard throughout the whole bldg. [sic],” one person said in a 311 complaint submitted at 4:40 a.m. on Nov. 14.

That complainant told DNAinfo New York that the couple first got busy and loud in October.

“I’m not sure what they were doing, but the woman was moaning and screaming, ‘Oh yeah, oh, do it to me,” said the complainant, who asked to remain anonymous out of fear of angering the landlord.

“I’m not a prude but there are kids in the building, and it was just a ridiculously loud amount of noise being made that the first time another woman yelled out her window, ‘Shut your f--ing windows you whore!’” the complainant added.

The complainant said that the couple’s sex quieted down during the winter, but it started back up last week when the warmer weather kicked in.

The couple could not be reached for comment.

After receiving a noise complaint, 311 operators will notify the local NYPD precinct, and, if officers are available, they’ll investigate the disturbance. Records show the officers who responded to complaints at 7201 Ridge Blvd. found no noise disturbances.

But the frustrated complainant told DNAinfo that each time he was told they couldn’t get close enough to hear them.

“Every time they claimed to not be able to access the building, even when I expressed that I’d let them into the building,” he said.

Each month the city’s 311 system receives tens of thousands of complaints about loud neighbors. Most gripes have to do with music, shouting or noisy machines like a generator or air conditioner.

But 311 data obtained by DNAinfo through a Freedom of Information Request shows that residents really start to rage when a neighbor has obstreperous sex. The complaints cover a gamut of noises — from orgy grunts to bedposts banging against a wall.

“My neighbor keeps having out of control sex head borad [sic] banging and yelling making to much noise,” a Bedford-Stuyvesant resident wrote in a 311 complaint submitted at 2:54 a.m. on April 1, 2014. “I would like for the police to explain to her she need to be a lil more discrete with the noise.”

In another 311 complaint submitted at 8:10 a.m. on June 10, a Sunset Park resident wrote: “My neighbor is making too much noise, she has a ‘sex machine’ and then she starts screaming ‘Yes, Yes, Yes’ for extended periods of time, they are perverts who constantly bring more individuals to perform more extreme sexual activities.”

Another Bedford-Stuyvesant resident complained that a neighbor’s loud sex was a health hazard.

“They are having sex and noise is unbearable,” the resident wrote in a March 14, 2014, complaint to 311. "This is a chronic issue. I am a very sick senior that needs assistance with this matter.”

But some spirited seniors are causing the noise.

A Marine Park father of two who lives on East 34th Street told DNAinfo that his 71-year-old neighbor could be the poster child for Viagra.

The father, who asked that his name be withheld, said the 71-year-old got a girlfriend last fall, and whenever she visits, the two always seem to have marathon sex around 2 a.m. or 3 a.m.

“I don’t know, maybe it’s the time the pills kick in,” he said.

The dad said the sex wakes neighbors on both sides of the 71-year-old’s home.

“It’s never quick and fast. And it’s mostly her screaming. It gets to the point where you can hear it outside,” the dad said, adding that he once heard them while taking his 4-year-old to school.

The noise prompted the dad to submit a 311 complaint at 6:24 a.m. on Nov. 29.

“My next door neighbors are having loud and vulgar sex since 11:30 pm!” he wrote. “This happens on a nightly basis. The noise is unbearable and keeps us awake at night. Also they turn on the music extremely loud but you can still hear them screaming outside!!!”

Bronx resident Maria Gutierrez, 36, told DNAinfo that she submitted a 311 complaint about her neighbor who lives above her because she couldn’t sleep during his afternoon delights.

“I can hear a woman screaming during a sexual act with someone, ‘Oh, honey! Oh, honey!” Gutierrez wrote in her complaint sent at 5:12 p.m. on Jan. 9. “I am not sure if there is more than one woman in the neighbor's house having sex as well. I am complaining b/c I have a small son; although he is in school right now and due to the fact that I am very uncomfortable with this situation.”

Gutierrez, a school bus driver, said that after her morning shifts, she comes home to her Laconia apartment to take a nap before heading out to transport students from school to their homes. Her neighbor's noise got so bad this winter that she would retreat to her car to sleep.

“I can hear everything,” she told DNAinfo. “The bed against the wall, you hear pop, pop, pop.”

Gutierrez said the sex noise seemed to get worst when it snowed heavily — with her neighbor holing up in his love shack. She said she was worried earlier this week that the noise would return with the heavy rains, but luckily it didn’t.

She said she likes her home but she might move if the randy racket returns.

"I say what am I going to do if I have visitors," she said. "I don't know what I'm going to do."