Thanks to the Dodger and Phillie fans, and bad weather in many places, the Nats actually rank 16th in attendance.
The three SoCal teams are the top 3, in part due to weather but also San Diego has become an incredibly popular draw since the Chargers left town. Giants aren't far behind. Seeing a lot of renewed interest in the Giants this year with Buster taking over baseball ops and more exciting players, especially a healthy Jung Hoo Lee.