About 20390 - Washington, District of Columbia
The ZIP code 20390 of Washington falls within District of Columbia, the United States - a small area by population. It sits within Washington County County.
Census data puts the population of this ZIP code at 7,520 residents. That's below the District of Columbia average of about 22,323 people per ZIP code.
Median household income is about $81,800 (below the District of Columbia average).
This ZIP code sits alongside neighboring areas like Washington within District of Columbia.