Yikes:

The results aren’t terribly surprising if you’ve ever worked a help desk. Around 5% of the U.S. population ranks at level 3, the strongest level of computer literacy. Another 26% ranks at level 2, where users can do things like “find a sustainability-related document that was sent to you by John Smith in October last year.” Those who ranked in level 2 likely aren’t developers or engineers, but they get by.

However, for the 69% of the population below level 2, complex skills are still hard to come by. 26% of people weren’t even able to use computers. The full report at the source link below shows how these numbers break down over age ranges. Regardless, the numbers give some perspective on how skilled the overall population is.