Showing just how popular D&D has become, the career website Zippia jsut posted a column on the states that play the most and least D&D as well as the most popular character classes. The state tha tplays the most D&D per capita is Utah, the least is New York. Given their relative population sizes that makes sense.
Based on internet searchs, the most popular characer class is monk, followed by ranger and druid in a dead heat. Given that the rankings are based on internet seraches, it might just be that those are the classes most people have questions about and, ergo, they launched a search for info about them.