It used to be extremely affluent and almost lily white 30 years ago. Huge Jewish population (Chertoff is from Potomac in the county) and a large number of very educated Roman Catholics. Think of Bethesda, Chevy Chase and Potomac.President George W. Bush has just said that the Republican Party, which he has led to catastrophe, should be "open-minded about big issues like immigration reform", by which he means closed-mindedly in favor of amnesty. In fact, of course, a truly open-minded party would move to give expression to Montgomery County's distress. With Bush off the scene, maybe this can finally happen. (Thanks, RC).
Now it has a huge number of Hispanics in places like Wheaton, Silver Spring, and Takoma Park. I believe Takoma Park is a sanctuary city.
Now the county is overrun by illegals.