All Mensa members have one thing in common, what each did to become a member: they all scored in the top 2 percent of the general population on an accepted stardardized intelligence test.


The word "Mensa" means "table" in Latin and symbolizes a round table where all members are seated equally, regardless of race, color, creed, national origin, age, politics, education, social or economic background.


The purpose of Mensa is to identify and to foster human intelligence for the benefit of humanity; to encourage research into the nature, characteristics, and uses of intelligence; and to provide a stimulating intellectual and social environment for its members.


Mensa is the oldest and largest society of its type in the world. It was founded in England in 1947 at Lincoln College in Oxford, England. American Mensa became the second major branch of Mensa.



This area is to share updates, last-minute notices, etc., with our members

Site Under Construction

         Under Construction


Our former President, friend and webmaster, Harold Ward, a well know local ornithologist, passed away.

Mensa on the Town

Saturday, August 12 – 1:00 pm to 2:30 pm
  • Boise Art Museum: 2017 Art Triennial
  • Location: 670 Julia Davis Dr., Boise ID (across the street from Main Library downtown)
Saturday, September 2 – 1:00 pm - ?
  • Sandbar Patio Bar and Grill - Blues on the Belt
  • Location: 2900 W Chinden Blvd, Garden City (at Riverside Inn)
September 9 – 1:00 pm. Meet in the lobby at 1 pm. Tour at your own pace.
  • Museum of Idaho - NASA’s Space: A Journey into our Future
  • Location: 200 N Eastern Ave, Idaho Falls, ID


Almost every Mensa event or activity relates to one of the items indentified in the Mensa purpose statement: "to provide a stimulating intellectual and social environment for its members; to identify and to foster human intelligence; or to encourage research into it's nature."

Southern Idaho Mensa

We have a wide range of regular local events, including: Annual Scholarship Awards, Mensa on the Town, Movable Feast, Live Trivia at a local pub, Weekly Happy Hour, Movie Night, etc.

American Mensa

Regional and Annual Gatherings, many SIGS (Special Interest Groups), Weekly Brainwave, Leadership Workshops, etc.

Mensa Int'l

Gifted Children Reasearch Program, Credit cards and insurance in many countries, Mensa Research Journal, Isolated M, International SIGHT (Service of Information, Guidance and Hospitality to Travelers), and much more.



Southern Idaho Mensa is the name our local Mensa group. Southern Idaho Mensa is affiliated with American Mensa, and American Mensa is affiliated with International Mensa.

Southern Idaho Mensa

Founded in the late 1970's, Southern Idaho Mensa (SIM) serves Mensa members in the southern half of Idaho and Malheur county in east Oregon.

American Mensa

American Mensa has more than 57,000 members and is the largest national group affiliated with Mensa Internation, Ltd.

Mensa Int'l

Mensa International has members in about 100 countries worldwide with national organizations established in about 50 countries.



There is no other eligibility requirement for Mensa than to pass an accepted intelligence test with a score in the 98 percentile or above.

Existing Test

The scores from about 200 standardized intelligence tests may qualify someone to be a member. If you have taken such a test, and have a qualifying score, the process is relatively simple.

Mensa Test

Mensa has its own admission test with a focus on logic and deductive reasoning that takes about two hours to complete. Local groups typically will administer the Mensa test once or twice a year. Get in touch if you are interested - and we have a practice test.

Culture Fair Test

Mensa does offer an intelligence test for those who cannot speak English, or who have little verbal fluency or education. Individuals taking these tests need only to recognize relationships in figures and shapes.



This section is about and for the members of Southern Idaho Mensa

Business Cards


TBD - might be Mensa Discounts?

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Southern Idaho Mensa

If you have questions about Southern Idaho Mensa, becoming a Mensa member, or just want to say hello!

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