Gary Ridgway
Where 82 Falls on the IQ Scale
What Is Gary Ridgway's IQ?
Gary Ridgway's IQ is estimated at approximately 82, placing them in the Below Average range. Gary Leon Ridgway, known as the Green River Killer or the Green River Strangler, is an American serial killer who was convicted of murdering forty-nine women between 1982 and 1998 in the northwestern United States. At the time of his arrest in 2001, he was believed to be the most prolific serial killer in United States history, according to confirmed murders.
For context, an IQ of 82 would put Gary Ridgway in approximately the 11.5th percentile of the global population. The average IQ is 100, and a score above 130 is generally considered "gifted," while 145+ is typically classified as genius-level.
Evidence Behind the Estimate
Unlike some figures with formally disclosed IQ scores, most celebrity IQ estimates are compiled from academic records, biographical accounts, performance data, and expert analysis. Estimated
- Historical records document exceptional intellectual capabilities
- Mastered multiple domains during their lifetime
- Demonstrated strategic and analytical thinking in their domain
- Left a lasting intellectual legacy that shapes thinking today
- Contemporary accounts noted their exceptional memory and reasoning ability
How Does Gary Ridgway Compare?
With an estimated IQ of 82, Gary Ridgway falls into the Below Average classification. Scores in this range represent solid above-average intelligence, associated with strong academic performance and professional success.
What Does This IQ Score Mean?
Psychologists generally agree that IQ captures a meaningful slice of cognitive ability — particularly in areas like abstract reasoning, pattern recognition, and verbal comprehension — but it's far from a complete picture. Many researchers emphasize that above a threshold of around 120–130, raw intelligence increasingly gives way to creativity, grit, emotional intelligence, and circumstance as determinants of real-world success.
Gary Ridgway's accomplishments in historical figures suggest a cognitive profile that pairs well with their estimated IQ — demonstrating not just raw intellectual firepower, but the drive and focus to convert it into meaningful output.