Which MLB Fanbases Are The Most Loyal?

It’s been 17 years since a team from the Keystone State last won a World Series, but that hasn’t stopped fans of the Philadelphia Phillies and Pittsburgh Pirates from wholeheartedly embracing Pennsylvania’s two MLB franchises, with each scoring well in a recent survey of league supporters.

For Philly, the returns were especially impressive, with the NL East franchise ranking third out of 30 MLB teams when it came to fanbase loyalty with a total score of 12.56 points, ranking behind the Los Angeles Dodgers and New York Yankees, while the Pirates finished 15th, with a total score of 53.44 points.

As for the teams themselves on the diamonds of the MLB this season across Pennsylvania sports betting, oddsmakers from Fanatics Sportsbook currently have the Phillies as their fifth leading candidate to win it all in 2025, at +1100, while the Pirates check in at +10000 to win the club’s first title since 1979 this fall.

Before the 2025 MLB season begins, PennStakes.com wanted to see what MLB teams have the strongest, most loyal fans. We factored in average stadium attendance, number of followers on X, attendance at away games and record over the seasons from 2022-2024.

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Most Loyal MLB Fans

Rank	Team	Score
1	Los Angeles Dodgers	4.64
2	New York Yankees	5.67
3	Philadelphia Phillies	12.56
4	Chicago Cubs	13.49
5	Atlanta Braves	21.60
6	San Francisco Giants	23.49
T-7	Texas Rangers	33.49
T-7	Boston Red Sox	33.49
9	Toronto Blue Jays	33.52
10	St. Louis Cardinals	34.51
11	San Diego Padres	35.54
12	Houston Astros	38.59
13	New York Mets	41.55
14	Cincinnati Reds	52.45
15	Pittsburgh Pirates	53.44
16	Arizona Diamondbacks	54.51
17	Baltimore Orioles	54.57
18	Los Angeles Angels	56.43
19	Detroit Tigers	59.47
20	Milwaukee Brewers	59.56
21	Cleveland Guardians	61.54
22	Colorado Rockies	62.39
23	Seattle Mariners	64.54
24	Chicago White Sox	66.38
25	Washington Nationals	67.41
26	Tampa Bay Rays	67.55
27	Kansas City Royals	70.43
28	Oakland Athletics	71.37
29	Minnesota Twins	75.51
30	Miami Marlins	77.44

Where Pennsylvania’s Two MLB Clubs Rank

Of the two teams that call Pennsylvania home, Philadelphia scored much better across our metrics, speaking to the immense loyalty that sports fans in the City of Brotherly Love have for the Senior Circuit club, while Pirates fans finished in the middle of the pack, loyalty-wise.

For the Pirates, it’s understandable that fans would be a bit wary of throwing themselves behind the club too much given the fact that the Pirates haven’t won the NL Central since joining the division, with Pittsburgh’s last divisional crown coming as a member of the old NL East in 1992.

Over in Philly, the results have been more promising in the regular season, with the Phillies winning four NL East division titles since the franchise’s last World Series championship in 2008, though the longstanding National League club has yet to hoist the Commissioner's Trophy in two trips to the championship series in that span (2009 and 2022).

Regardless, it’s safe to say that Phillies fans are among the most passionate of any fanbase in the Majors, while baseball patrons in the state’s western flank are a bit more reserved, thanks to the Pirates longstanding struggle for relevancy in the sports hotbed of Pittsburgh.

USA Today photo by Kyle Ross.

Author

Christopher Boan

Christopher Boan has been covering sports and sports betting for more than seven years, including stops at ArizonaSports.com, the Tucson Weekly and the Green Valley News.