The American Mensa Annual Gathering started as a small, two-day meet-and-greet at the New York Belmont in 1963. The event now spans five days and features a sprawl of talks, games, and entertainment unlike any other.
We have a fantastic party in the works for Annual Gathering 2025, July 2 - 6! Chicago is a revolution of creativity, music, food, art, and spirit … and we get to enjoy it all week! Come see all your friends and perhaps make a few new ones. Trust us, this AG is going to be lit!
A 10 percent processing fee will be charged for cancellation and refund requests through May 31, 2025. Refund and cancellation requests received after May 31 will be reviewed case by case, based on circumstance and event viability. Registration rates are nontransferable. For more information or to cancel, email Registration.
| Cutoff | Member Rate | Guest Rate |
|---|---|---|
| Nov. 30 | $279 | $319 |
| Jan. 31 | $319 | $359 |
| Mar. 31 | $359 | $399 |
| On-site | $399 | $439 |
| Daily Rate | $133 | $173 |
| Age | Member Rate | Guest Rate |
|---|---|---|
| ≤ 3 | Free | Free |
| 4-12 | $139 | $174 |
| 13-20 | $223 | $258 |
| Daily Rate | $74 | $76 |
Please note: Registration rates increase at 11:59 p.m., Eastern time, on the cutoff date listed.
Classic elegance meets sophisticated styling and thoughtful amenities at the Hilton Chicago. Overlooking Grant Park, Lake Michigan, and Museum Campus, the Hilton Chicago is located within walking distance of State Street and Magnificent Mile shopping, Soldier Field's games and concerts, and near Pilsen neighborhood's bar and restaurant scene. Hop on the 'L' to Chinatown, absorb the arts featured in Wabash Arts Corridor or simply wonder in the sights of the Shedd Aquarium and Adler Planetarium. Please note: Event registration is required before hotel registration code/link will be shared.
Join us for the Annual Gathering Gala Dinner, an entertaining evening filled with food, friends, and this year's special guest speaker, New York Times bestselling author and legendary Jeopardy! host and champion, Ken Jennings. In his Gala Dinner keynote, Artificial Intelligence: Are Humans in Jeopardy?, Jennings will reflect on the rise of AI — an evolution he’s witnessed firsthand, having famously faced off against IBM’s Watson in a groundbreaking 2011 match.
Sponsored by the Mensa Foundation, Spark! programming offers our youngest attendees the chance to have fun experiences, build new friendships, and make lasting memories. Spark! comprises three days of structured programming for children ages 4-12 divided into three age groups, enabling children to have their own AG adventure! (Registration for Spark! must be completed in addition to AG registration.)
| Ages | Thursday - Saturday | |
|---|---|---|
| 4-12 |
|
$60 |
(Rate includes all three days; daily rates will not be available this year.)
Please note: Registration to the Annual Gathering event is required for young attendees to attend Spark!. Parents who wish to participate in AG activities (including Hospitality) must also be registered for the event.