About 20431 - Washington, District of Columbia
ZIP code 20431 covers the community of Washington in District of Columbia, the United States. This area falls under Washington County County.
Census data puts the population of this ZIP code at 38,299 residents. This puts it well ahead of the typical ZIP code in District of Columbia (roughly 22,323).
Median household income is about $81,700 (below the District of Columbia average).
This ZIP code sits alongside neighboring areas like Washington within District of Columbia.