You are missing that Fairfax County and the surrounding area typically determine the results of Virginia elections because of population. Fairfax, Loudon, and Prince William - all surrounding DC essentially compiles a third of the vote for the state and they are ~70-80% (D). It was only because Loudon County swung toward (R) - though still 52% (D) in the last election was how Youngkin got elected. Fairfax went 65% (D) that year, and the cities within it (Alexandria, Arlington) went 80% (D).
worldpopulationreview.com/us…