The whole section around DC is..questionable. PG, Fairfax, and Loudoun counties are all in the Tidewater group that extends down to the NC triangle. Meanwhile Montgomery County, which is right over the Potomoc from Fairfax/Loudoun, is in a separate group that's shared with Philadelphia and Ohio? MoCo, Fairfax, and Loudoun are all incredibly similar both culturally and economically (i.e. wealthy DC suburbanites) and should either all be in the Tidewater category or in some separate "Capital Area" nation.

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BetaDeltaAlpha 8 hours ago | parent [-]

Federal entity should extend to the Rappahanock River

	▲	stryan 8 hours ago \| parent [-]
		I'm not sure I'd extend it that far, but personally I could see at least to Woodbridge. Another comment mentions this is based at least partially off original settlement/immigration patterns so I'm willing to be more leniant now, but at the very least inside the Beltway should be Federal entity/Capital area.