I was searching for a theater time to take the family to "Despicable Me 2" last night, so for the fun of it, I also checked to see which theaters were still showing STID. The only places that came up near my zip code were the Udvar Hazy center and a theater in Fairfax. Out of curiosity, I typed in the DC zip code, and only four theaters came up: Alexandria, Bethesda, Clarendon, and Silver Spring.
I was surprised to see it's still at Udvar Hazy (the air and space museum near Dulles Airport). Tempted to take in a third viewing just because of the location.
At any rate, showing in as few places as it is, if the movie is going to get any kind of Fourth of July weekend bump in the DC-Northern VA area, people are really going to have to want to drive to see it.