r/ISTJ↗
ISTJ is a personality type from the Myers-Briggs Type Indicator. Known for integrity, loyalty, and responsibility, the ISTJ values efficiency and order.
32k subscribers46 posts / mo in Sep 202636 authors / mosince 2009
r/ISTJ has 32k members (+14% over the last 12 months). It gets about 46 posts a month from 36 people. Top topics: MBTI Relationships, Personality Types and Friendship Dynamics.
When to post on r/ISTJ
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How r/ISTJ has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/ISTJ
Top topics
Share of the subreddit's posts
- MBTI Relationships8.2%
- Personality Types2.0%
- Friendship Dynamics1.9%
- Marriage & Personality Types1.2%
- Routine & Organization1.0%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Wikisocion
- Wikisocion
- 16Personalities
- Truity
Everything else about r/ISTJ
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research