Yeah, I'd call it a "smaller major city". It has about the same population as Milwaukee. But as Tim mentioned, its metropolitan area is substantial -- about 4x larger than Milwaukee's. It's metropolitan area is larger, but it also is the only city with its own region supporting the same team. There's 14 million people almost exclusively in support of the Boston teams. Milwaukee is right down the street from Chicago with Minnesota to the West and Detroit to the East. The heart of Milwaukee support is basically just the 5+ million people in Wisconsin. I think the closest comparison to New England may be Arizona, which is the only game in town, for miles and miles. But that is a much more spread out population, and a huge portion of it is transplanted from other locations. For sports support conversations, Boston does not belong in the "smaller city" discussion.