Quote:
Originally Posted by westak
DC-Baltimore is just two metros that border each other while Chicago(whether MSA/CSA) is about Chicago as the center of that region. Baltimore and DC feel like two seperate cities and imho don't feel combined in a lived out/cultural sense.
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This is kind of it. There's a bit of a similar dynamic with Boston-Providence and SF-SJ.
The I-95 corridor linking Boston and Providence is lined with mostly sparsely populated bedroom communities and forest preserves, while the peninsula connecting SF and SJ is contiguous suburban sprawl. Driving distance-wise, both are about 50 miles apart.
But Providence has never in its history been larger or wielded more influence than Boston. In the Bay Area however, SJ is larger in population (with a comparable population to SF by 1980), has its own pro sports team, its own international airport, a CSU, and of course is the global capital of the tech industry. When looking at Google Maps, SJ is given the same prominence (dot and font size) as SF.
Meanwhile, DC and Baltimore are closer (38 miles), connected by Acela and many more highways. You have Prince George's County sharing a substantial border with DC to the south and Anne Arundel County to the east. Baltimore city and County give the Baltimore metro a slight northern tilt, although Anne Arundel County (second most populous suburban county) is where BWI, Fort Meade, and Annapolis are located.
There's really no other comp where you have two separate and distinct legacy cities merging together, with the far more important (though not always) one being the younger of the two and having always trailed the older one in population (until the 2020 census).
FYI, if you take the DC-leaning counties included as part of the CSA and added them to DC's MSA count, you'd have a population of approximately 6.6 million people. I think that number more closely aligns with how we perceive DC in terms of size.