Rarest Personality Type 2024. Istj — 17.6% (previously ranked #3) isfj — 10.6% (previously ranked #1) istp —. The rarest personality type of the mbti personality classification model is the infj, with just 1.5% of the general population having it.

Learn about the sixteen different personality. Overall, infj is the rarest personality type out of all 16 personality types.