Chicago has nothing on Seattle (OK, except for a manufacturer, and the Sharpe brothers promoting pinball).
Monday Night Pinball in Seattle now has 26 teams with 10 players each, plus a massive pool of substitute players. We've grown to the point of splitting into upper and lower divisions with promotion and relegation.
https://www.mondaynightpinball.com
And that's just one weekly event. There are a ton of events: