What the 6-6-6 rule asks for
On social media, the 6-6-6 rule usually describes a partner who is 6 feet tall and earns six figures, and the third six changes from one version to the next. It is advice, and no survey has measured how it works out for anyone. We can count the first two sixes. The third falls outside the Census and CDC records the calculator uses.
Why you may have seen 2.3% instead of 3.6%
A post circulating on Threads says 14% of adult men are over 6 feet and 17% make over $100,000, and puts the combined share at 2.3%. It does not name a source or say which ages it counted, so we cannot trace its inputs. For men ages 20–69, we estimate that 16.8% are at least 6 feet tall from CDC measurements taken in 2021–2023, and 2024 Census records show 21.9% with $100,000 or more in personal income. Multiplying those two shares gives about 3.7%, by our arithmetic. Our 3.6% multiplies them within each age group and adds the results, which lands a little lower because the two shares do not move together with age. Men in their 20s are among the most likely to be 6 feet tall and the least likely to earn $100,000. Men in their 50s are about as likely as men in their 40s to earn it and the least likely to be 6 feet tall. Both figures assume height and income are unrelated within an age group.
Why age moves the number
In the CDC measurements, the share of men at 6 feet or taller changes little from the 20s through the 40s. The share with $100,000 or more in Census records rises steeply over the same years. So the two cutoffs together are rare in the early 20s and most common in the 40s, as the table shows.
Who got counted
Income, age, and marital status come from the same 2024 Census person records. Height comes from men the CDC measured during health exams. The two surveys counted different people, so within each age group we treat height and income as unrelated. If they are related, the true share differs from our estimate.
What six figures means here
Six figures means one person’s annual income from all reported sources, at $100,000 or more. The age group includes men who are not employed. Household income combines everyone who shares a home, so it answers a different question.