Chris Rock learned to swim at 55. Now he can use his N.J. pool.

Chris Rock lives in New Jersey. Except it isn’t really New Jersey, he once mused ... because it’s Alpine.

He bought a home in the tony, celebrity-stocked Bergen County neighborhood just north of the George Washington Bridge in 2001, for $3 million. Rock shared the house with his then-wife Malaak Compton and their daughters Lola, now 18, and Zahra, 16.

When the couple separated (they’re now divorced), Rock bought a house “around the corner,” he said in his 2018 Netflix comedy special “Tamborine," which covered his infidelity and pornography addiction, among other topics.

But he was never really able to make full use of one of the home’s amenities — the swimming pool.

Starting this year, he can. In a Hollywood Reporter cover story published online Wednesday, Rock says he learned to swim at age 55.

The superstar comedian, actor and director can be seen in the upcoming fourth season of FX’s anthology series “Fargo." He tells the magazine that the swimming was part of a new fitness regimen — along with weightlifting, walking and nixing sugar — that saw him develop washboard abs.

“Do you know how f---ing hard it is for a grown-up to learn how to swim?" Rock says. “You’ve got to not be scared to die ... The other day, this guy says to me, ‘OK, you’re going to dive into the deep end and swim to the other side,’ and I’m like, ‘Are you f---ing crazy?’ But then I dove into the deep end and I swam to the other side, and it’s a metaphor for what I’ve been trying to do during this time.”

Rock says he’s overhauled his life with fitness but also “a ton of therapy" — he says he commits to seven hours a week. He sought out therapy after a friend suggested he might have Asperger’s syndrome. After undergoing cognitive testing, Rock was diagnosed with nonverbal learning disorder. He says he has trouble picking up on nonverbal signals and often takes things too literally.

"All I understand are the words,” he tells the magazine.

Rock joined other celebrities who live in New Jersey, including Whoopi Goldberg and Jon Stewart, at the virtual “Jersey 4 Jersey” benefit for the New Jersey Pandemic Relief Fund in April.

In “Fargo,” which is set in 1950s Kansas City this season, Rock plays Loy Cannon, the head of an African American crime family. Rock calls it the best part he’s ever had.

The fourth season of “Fargo” premieres with two back-to-back episodes at 9 p.m. ET/PT Sept. 27 on FX, available the next day on Hulu.

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Amy Kuperinsky may be reached at [email protected]. Send a coronavirus tip here.