The X-Mansion’s Real Comic Book Address Will Make You Want to Move to Westchester

Every X-Men fan eventually asks the same question while watching Professor Charles Xavier gather his students under one roof. Where exactly is this famous estate supposed to be, and could you actually visit it if the mutants of Marvel Comics were real.

It turns out the answer is more specific than most casual fans realize, and the X-Mansion has an entire history tied to a real corner of New York state. Between the comics, the movies, and the upcoming MCU reboot, the mansion’s location has become a small mythology all its own.

The X-Mansion’s Official Address in Marvel Comics

According to Marvel’s own canon, the mansion sits at 1407 Graymalkin Lane in Salem Center, which is located in Westchester County, New York. The estate serves as the private residence of Charles Xavier and functions as the base of operations, home, and training site for the X-Men. The property is also home to the school, which began as Xavier’s School for Gifted Youngsters before later being renamed multiple times over the decades.

The X-Mansion first appeared in ‘X-Men’ number one back in 1963, a comic written by Stan Lee and illustrated by Jack Kirby. The mansion was not always a school either, since it originally belonged to the Xavier family before Charles converted it. Following the Cuban Missile Crisis, Xavier transformed the family estate into a boarding school for young mutants, complete with a bunker his stepfather had built beneath the property to survive a potential nuclear attack.

That underground bunker eventually became the training facility fans know from the comics and films, hidden beneath the school’s polished hallways. Beneath the mansion itself lies the X-Men’s actual base of operations and training site, separate from the classrooms above. It is a detail that has stuck around through nearly every version of ‘X-Men’ storytelling, whether the team is called the Jean Grey School or the Xavier Institute in a given era.

Interestingly, the mansion’s location has not stayed fixed across every corner of Marvel canon. In some alternate continuities, like the version tied to ‘X-Men Evolution’ and the New Mutants line, the school is instead placed in a town called Bayville rather than Salem Center. There have even been storylines where the mansion is destroyed and the team relocates entirely, including a stretch where Kitty Pryde moved operations into the middle of Central Park.

Where the Live Action Movies Actually Filmed the Mansion

None of the ‘X-Men’ movies were actually shot at a real address in Westchester, since the production teams needed grand, camera ready estates elsewhere. The original ‘X-Men’ used the Parkwood Estate in Oshawa, Ontario, along with Casa Loma in Toronto, to stand in for the mansion’s exterior. Later films took a different approach entirely once the franchise grew in scale.

Starting with ‘X2: X-Men United’ and continuing through ‘X-Men: The Last Stand,’ ‘X-Men: Days of Future Past,’ ‘Deadpool,’ and ‘X-Men: Apocalypse,’ the production shifted to using the Hatley Estate in British Columbia as the mansion’s stand in.

That historic property, a former naval training facility, has become closely associated with the franchise’s visual identity for over a decade. Other productions have used the Englefield House in Berkshire, England, adding yet another real world location to the mansion’s cinematic history.

Even the Deadpool spinoffs got creative with their mansion sets rather than reusing the same building every time. The ‘Deadpool’ films needed a location that could double as both a lived-in school and an action set piece, which explains why the production hopped between different manors depending on the scene. Fans who track filming locations closely have turned this into something of a scavenger hunt over the years, comparing screenshots to real estate photos of these Canadian and British properties.

Fans Even Found the X-Mansion on Google Maps

In one of the more charming pieces of fan culture surrounding the property, someone actually listed the X-Mansion on Google Maps using its comic book address. The listing places the mansion at Greymalkin Lane in North Salem, New York, matching the address frequently referenced in the comics. The listing even attracted glowing reviews from fans pretending to be former students who praised the staff and their mutant education.

Not everyone was satisfied with the placement, however. A one star review reportedly attributed to Charles Xavier himself claimed the pin was inaccurate, insisting the real mansion sits closer to Breakstone Lake instead. It is a small, funny reminder of just how devoted ‘X-Men’ fandom can be, treating fictional geography with the same scrutiny as a real landmark.

What the MCU’s X-Men Reboot Means for the Mansion’s Future

The mansion’s next chapter is currently unfolding behind the scenes at Marvel Studios, where a full ‘X-Men’ reboot has been quietly taking shape. Michael Lesslie was brought on to write the script, with Joanna Calo and Lee Sung Jin later joining to rework his draft, both having previously collaborated with the project’s director on ‘Thunderbolts*.’ That director is Jake Schreier, whose involvement has fueled speculation about the tone this new mutant team will take.

Before the reboot even arrives, the mansion is already making an appearance in the Marvel Cinematic Universe through ‘Avengers: Doomsday.’ Reports indicate filming took place on a practical set built for the X-Mansion, with the sequence reportedly depicting the estate under attack, and the cast includes original franchise veterans Patrick Stewart, Ian McKellen, Rebecca Romijn, and James Marsden. That would suggest the mansion, in some form, is about to get another dramatic moment on the big screen before the new era even begins.

As for the reboot itself, the timeline suggests fans still have some waiting to do. Production is expected to begin once ‘Avengers: Secret Wars’ wraps filming, which points to a start sometime in late 2026 or early 2027. Kevin Feige has described the new mutant team as very youth-oriented, hinting that this version of the X-Men could look quite different from the mansion residents fans grew up watching.

Whether the new film brings the mansion back to Westchester or reimagines its location entirely remains one of the biggest open questions heading into the reboot’s development. Given how much care Marvel has historically put into the property’s mythology, it would be surprising to see Salem Center disappear from the map altogether. What would you want to see from the X-Mansion’s next on screen appearance, and should Marvel finally film it somewhere closer to its actual comic book roots?