Mark Zuckerberg

Early life and education

Mark Elliot Zuckerberg was born May 14, 1984, in White Plains, New York, and grew up in Dobbs Ferry. His father Edward Zuckerberg was a dentist; his mother Karen was a psychiatrist. As a teenager he taught himself programming and, with a software engineer his father hired to tutor him, built a messaging program he called "ZuckNet" to connect the family home and his father's dental practice.

He attended Phillips Exeter Academy, where he co-wrote an early music-recommendation tool called Synapse that reportedly drew acquisition interest from large technology companies. He then enrolled at Harvard University in 2002, studying psychology and computer science, before dropping out in 2004 to work on Facebook full time. Harvard later awarded him an honorary degree in 2017.

None of this educational record includes a published IQ score. Admission to a selective prep school and to Harvard implies strong standardized-test performance, but those are biographical facts, not psychometric measurements, and they do not produce a specific number.

Companies and career

In February 2004, Zuckerberg launched "TheFacebook" from his Harvard dorm with classmates Eduardo Saverin, Dustin Moskovitz, Chris Hughes, and Andrew McCollum. The site spread rapidly across universities, the company relocated to Palo Alto, and it dropped "The" from its name in 2005. Facebook opened to the general public in 2006 and held its initial public offering in 2012.

Under Zuckerberg the company acquired Instagram (2012) and WhatsApp (2014), built one of the largest digital advertising businesses in the world, and in 2021 rebranded its parent company as Meta Platforms to reflect a long-term bet on virtual and augmented reality through Reality Labs. He has retained majority voting control of the company through a dual-class share structure since the IPO.

This record reflects exceptional programming ability, product focus, and business judgment, executed at enormous scale. It does not depend on, or reveal, any particular IQ figure.

The IQ question and where the number comes from

The figure of about 152 - and other figures clustering around 150 to 155 in different posts - appears widely on "celebrity IQ" list sites and social media. None of these sources cite a named test (Stanford-Binet, WAIS, Mensa-administered Cattell, etc.), a date, an examiner, or a documented administration. The numbers are presented without provenance.

This is the standard pattern for living-celebrity IQ figures: list-makers work backwards from a person's visible achievements to a plausible-sounding round number. That reasoning is psychometrically invalid. IQ is defined as a normed position relative to a population on a specific instrument; it cannot be inferred from a resume. A person can build one of the world's largest companies without anyone ever having measured their IQ - and in Zuckerberg's case, no one publicly has.

Zuckerberg himself has not claimed a specific IQ in any verifiable record. Absent a published, named, dated test result, the honest answer to "what is Mark Zuckerberg's IQ" is: unknown - there is no measurement.

Why celebrity IQ numbers are usually wrong

Three recurring problems make figures like this unreliable:

• No instrument. A score has no meaning without the test it came from. A 152 on a high-ceiling research test is a different population position than a 152 on the WAIS-IV.
• No administration. Real scores come from a documented sitting: where, when, scored by whom. Celebrity figures have none of this.
• Reverse inference. Assigning an IQ based on someone being successful is circular - it assumes the conclusion (high ability) and dresses it up as a measurement.

For how real scores are produced and why they are not comparable across tests, see our methodology page and the historical IQ tests archive.

Frequently asked questions

Other modern figures