I’m new to karting and have only been to indoor kart track. I live in Maryland and trying to research the current demographics and membership. I understand that the west coast has the largest number of kart racers but was looking for more on the east coast.
Come out to Nicholson Speedway in Chestertown. You can get a good taste of all kinds of karting. TAG, 2 stroke, 4 stroke, classic stuff and new stuff. Schedule is on their site http://www.NicholsonSpeedway.com
There are not many statistics regarding the number of karters. However, you may want to contact sanctioning bodies such as World Karting Association, Superkarts! USA, United States Rotax Max Challenge, International Kart Federation. And also contact insurance company National Karting Alliance, as they may have some figures for you as well. Thanks.