I grew up and live in Rockville and my wife grew up in Silver Spring, and I think we have a pretty good handle on the area. I know Hebrews that live in Burtonsville, Damascus, Germantown, White Oak, ect. I also know Muslims that live in the same neighborhoods including ours. The location of the synagogues is not all that important unless they are ultra conservative and the congretion walks to the synagogue on the sabbath. right now the most conservative ones are in the neaighborhoods I described. As far as those neighborhoods go, they are not exclusively rich (ie Scotland in Potomac). Your point doesn't seem to be very valid to anyone but yourself and has not really been one that any here has picked up on.
I think I will stick with the folks who live there and ignore the comments of those who do not live there concerning this very narrow issue.