The old Bob Hope quote never gets old. It is why Americans continue to move to Washington, DC. More importantly, it is an indication of serious economic issues: if you want to move to America’s wealthiest places, move to where the government is.
Check out this article which goes through the data. Los Alamos is the 3rd-wealthiest county in America (thanks to the government!). 4 of the 5 wealthiest counties are in the DC suburbs (only Los Alamos is not). 6 of the top 10 wealthiest are in the DC area.
Anyway, fascinating data and a sad commentary on the central role Washington now plays in the US economy.