Well we can ask members in certain areas things like the amount of eva merchandise, how quickly it sells, how much of an eva presence they see at conventions, and make a slightly educated guess. East coast would probably be a dark color.

EvangelionFan wrote:What would be useful for the EvaWiki is an article on Carl Horn.

Carl served Evangelion works in the following capacities:

Neon Genesis Evangelion (1st Edition & Issue-based Comic): Editor
Neon Genesis Evangelion (2nd Edition): English Adaptation; Editor
The Shinji Ikari Raising Project: English Adaptation; Editor
Campus Apocalypse: English Adaptation
Der Mond: Editor

He has also been an editor for Animerica, and has spoken numerous times about Evangelion for interview and at panels.

Ornette wrote:How does one even estimate the number of fans based on the number of members with any remote accuracy?

You don't.