According to HighIQPro, the average IQ is between 90 and 109, with 50 percent of the population falling into this range. The low average is between 85 and 89 (23 percent fall into this range). The high average is between 110 and 115 (25 percent fall into this range).
IQs ranging from 115 to 129 are considered high IQs, with approximately 15 percent of the population falling into this range. An IQ of 124 or higher is required in order to join the International High IQ Society. Someone with a "gifted" IQ has a score of 130 or higher (2 percent of people fall into this category). A gifted IQ is required in order to join Mensa. An IQ of 140 or higher is considered highly gifted, but only 0.4 percent of the population test in this range, according to HighIQPro.