Two distinct audience neighborhoods define Only In Boston's top 10: a tight civic cluster at the top, and a Boston sports cluster just below it. The gap between them — roughly 0.05 points — is the clearest structural signal in the data.

The upper peak is anchored by Governor of Massachusetts at 0.98, Boston.com at 0.97, and Boston Police Department at 0.96. These three — two Government subcategory entities and the one other City and Local Account in the top 10 — form a dense civic-Boston neighborhood. Boston Globe Sports (0.94, News Publishers) sits at the edge of that cluster, bridging toward the second peak.

That second peak is built from Boston sports: Tree House Brewing Co. (0.90, Breweries) leads it, followed by the Boston Bruins (0.88) and Red Sox (0.87), both Sports Teams, then Funhouse (0.86, TV Shows), Julian Edelman (0.84, Athletes), and David Ortiz (0.84, Athletes). The brewery's presence here — rather than in the civic cluster — suggests the sports-fan segment carries a distinct local-consumer dimension beyond pure team fandom.

The two-peak shape means this audience isn't simply "Boston fans" in a uniform sense: it bridges people who follow the city's civic and governmental institutions with people who follow its sports franchises and associated culture, and those two groups are meaningfully separable by audience composition.