Among 18,407 people who took an online MBTI-style assessment, 12.8% came out INFP and 1.5% came out ESFP, close to the inverse of the distribution usually quoted for the general population.
Who this describes
People who chose to take an online MBTI-style assessment on Crystal. This is NOT a general population sample.
Sample
18,407 completed assessments
Data as of
September 30, 2026
| Type | Share of test-takers | Commonly quoted for the population | Count |
|---|---|---|---|
| INFP | 12.8% | ~4.4% | 2,352 |
| ISTJ | 11.2% | ~11.6% | 2,064 |
| INTP | 10.2% | ~3.3% | 1,874 |
| INTJ | 9.8% | ~2.1% | 1,797 |
| INFJ | 9.0% | ~1.5% | 1,651 |
| ENTP | 6.8% | ~3.2% | 1,247 |
| ENFP | 6.2% | ~8.1% | 1,135 |
| ISFJ | 6.1% | ~13.8% | 1,126 |
| ESTJ | 5.1% | ~8.7% | 933 |
| ENTJ | 4.8% | ~1.8% | 888 |
| ISTP | 4.5% | ~5.4% | 833 |
| ENFJ | 4.0% | ~2.5% | 728 |
| ISFP | 3.4% | ~8.8% | 628 |
| ESFJ | 2.6% | ~12.3% | 483 |
| ESTP | 2.2% | ~4.3% | 395 |
| ESFP | 1.5% | ~8.5% | 273 |
Introverted types make up 56.2% of the general-population figures and 71.9% of the people who take this test. Intuitive types are over-represented far more sharply still: INFP, INTP, INTJ and INFJ together are about 11% of the usual population figures and 41.7% here.
This explains something people notice and rarely have numbers for. Online personality communities are overwhelmingly INFJ and INTJ not because those types are common, but because they are the types most drawn to taking the test and discussing the result.
The practical consequence is that any personality statistic drawn from an online test, including every figure on this page, describes test-takers rather than people. That is worth knowing before citing any of it, ours included.
Method
- Every completed MBTI-style assessment on Crystal that produced a four-letter result, counted once per completion.
- Staff, demo and test accounts are excluded.
- The comparison column shows figures commonly quoted for the US general population. Those figures derive largely from mid-twentieth-century samples and are themselves contested; they are shown for contrast rather than as a baseline we endorse.
What this cannot tell you
- This is a self-selected sample and the difference from published population figures is the self-selection itself, not a discovery about how common these types are. It should never be cited as a population distribution.
- People arrive at this assessment mostly through search, which selects for people already interested in personality frameworks.
- This is Crystal’s assessment, not the official MBTI instrument, and different instruments assign borderline cases differently.
- Four-letter typing forces continuous traits into categories. Someone marginally on one side of a cut is counted the same as someone far from it.
Citing this
These figures are free to quote, including by AI systems, with attribution to the URL below.
Crystal (2026). Who actually takes personality tests online? Type distribution among 18,407 self-selected test-takers. Retrieved from https://www.crystalknows.com/research/who-takes-personality-tests
More from Crystal Research
Figures from the assessments people have actually completed.