District of Columbia ZIP Codes

ZIP codes: 277
Cities & towns: 3
Districts: 1
Area codes: 2

How District of Columbia ZIP codes are numbered

200xx–569xx

The first three digits identify the sectional center facility that processes mail for a region, so a District of Columbia ZIP code can be placed geographically from its prefix alone. Each row names the city holding the most codes in that prefix.

District of Columbia three-digit ZIP prefixes, the codes in each, and the city that holds the most of them.
Prefix	ZIP codes	Main area
200xx	71	Washington
202xx	52	Washington
203xx	28	Washington
204xx	50	Washington
205xx	70	Washington
569xx	6	Washington

Where District of Columbia's communities sit

Each point is a District of Columbia community with a published ZIP code list, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

District of Columbia cities by ZIP code count

largest 25

Area codes serving District of Columbia

Scope every ZIP code recorded in District of Columbia. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. The map outline is a convex envelope of published places, not a state boundary.