20
Have you considered determining NPC gender randomly?
(ttrpg.network)
At some point in the past, I noticed that I had a strong tendency to make NPCs male, even though there wasn't any good story or setting-specific reason to do so. From gods to villains to random shopkeepers - most of these were assigned male without me even realizing that I have been doing it.
Thus, I started to assign genders by the roll of a dice - and I am fairly pleased with the results as this made the world significantly more diverse.
How about you? Have you noticed any similar biases in your own NPCs - and if so, what did you do about this?
When I ran games in high school most of my NPCs were male because my horny friends would always try and hook up with the women.
Now I do not mention gender unless it is relevant. I do need to add some non-cis, non-binary npcs.