About 20578 - Washington, District of Columbia
ZIP code 20578 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 12,901 residents. It's a quieter, less populous area than the typical District of Columbia ZIP code (avg. ~22,323).
Median household income is about $116,200 (above the District of Columbia average).
Other ZIP code codes in District of Columbia serve areas such as Washington.