IQ 105: meaning, percentile and rarity
An IQ of 105 sits in the average range on the standard scale (mean 100, standard deviation 15). 63.06% of the reference population scores below this level, and 36.94% scores above it.
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- 63.06% of people score below IQ 105, and 36.94% score above it.
- Rarity
- About 1 in 2.7 people score IQ 105 or higher.
- Distance from the mean
- 5 points above the mean of 100 — about 0.33 standard deviations.
63.06% of people score below IQ 105, and 36.94% score above it.
What range does IQ 105 fall into?
An IQ of 105 sits in the average range.
This is the center of the scale: around half of all people score in the broader average region (90 to 109), and scores near 100 are the most common in the population.
How rare is IQ 105?
About 1 in 2.7 people score IQ 105 or higher.
Frequently asked questions
- Is an IQ of 105 a good score?
- An IQ of 105 sits in the average range, with about 63.06% of a normal population scoring below it. Whether that counts as good depends on what the score is used for — and no single online result should be treated as a definitive measure of ability.
- How rare is an IQ of 105?
- In a normal distribution, about 1 in 2.7 people score IQ 105 or higher.
- What percentile is an IQ of 105?
- 63.06% of the reference population scores below IQ 105. That is its percentile rank — a position on a scale from 0 to 100, not the share of questions answered correctly.
This page describes the theoretical normal distribution (mean 100, standard deviation 15) for educational purposes. It is not a clinical assessment or a diagnosis.