Correction: I counted only 11 major Maker Faires (not dozens), but there are 61 mini-Maker Faires in 2013.
The largest Maker Faire is the original Bay Area event, and they had around 120k people this year.
Here are the cities with major Maker Faires:
Kansas City (KS)
Fort Wayne Regional (IN)
World New York (NYC)
Bay Area (San Mateo, CA)
There are dozens of major Maker Faire events in major cities (Bay Area, New York, Detroit, Rome...) and mini-Maker Faires in smaller cities.
Here's a list of the upcoming Faires:
I count 50 upcoming Faires this year.
Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.