This map shows how far and wide Dodgers fandom spreads

With the Dodgers playing in the World Series for the first time in almost three decades, it seems like everyone’s got Dodger Fever. But when the fever subsides, where do true blue Dodger fans reside?

Using aggregated data gathered from Facebook in 2014—all those "likes" for a certain team—the New York Times created this interactive map, which lets us see down to the zip code where Southern California’s baseball allegiances lie. Just how far does Dodgers fervor spread and how much have the Angels encroached on their territory?

The maps show fandom with colors, and the darker the color, the larger the majority of residents for that team. SoCal is largely Dodger blue despite expected hot spots for the Padres around San Diego and the Angels in Orange County.

The Angels/Dodgers border (the Reagan-Nixon line, as the Times calls it), runs roughly along the Orange County line for much of the way, with exceptions for La Habra and Los Alamitos.

In general, the Westside is cooler on blue than Central and Southeast LA and areas east of the LA River. Some areas in the Valley, Carson, Gardena, and Baldwin Park have also been exceptionally hard-hit by Dodger fever. We wonder how the map would change if the data were gathered right now, as the Dodgers prepare to head into their first World Series game.

• Up Close on Baseball's Borders [New York Times]