Mostly men with a large margin between the genders. That's probably the most accurate answer you're going to get out of this. Looking at some tech surveys like

Mostly men with a large margin between the genders. That's probably the most accurate answer you're going to get out of this. Looking at some tech surveys like stackoverflow for example, the ratio is roughly 10:1. You could argue about HN demographics being slightly different for some reason but that would be just guesswork.