Washington, DC.
The proper noun is spelled Washington (e.g. George Washington, Washington state, Washington, DC).
The US national capital is spelled "Washington DC" (District of Columbia).
The likely word is the proper noun Washington City, a location in Utah.(The US national capital is Washington, DC in the District of Columbia.)
Washington, DC
Washington DC
Washington - Baltimore Washington International, DC, USA (BWI) Washington - Washington - All Airports, DC, USA (WAS) Washington - Ronald Reagan National Airport, DC, USA (DCA) Washington - Washington Dulles, DC, USA (IAD)
there are no counties in Washington DC because Washington DC is a city itself.
Washington, DC
Washington DC
Yes, NASA's headquarters is located in Washington DC.
Washington DC was named by george washington.