ZIP code 20551: Washington, DC
ZIP code 20551 is in District of Columbia, District of Columbia, outside any city or Census-designated place. It is in District of Columbia's at-large congressional district. Its state senate district is Ward 2.
See it on the mapAll of District of Columbia
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| District of Columbia | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Washington city | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| District of Columbia's at-large congressional district (DC-AL) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Delegate to the U.S. House (DC-AL) | Eleanor Holmes Norton (D) | 202-225-8050 | 100% |
| State Senator (Ward 2) | Brooke Pinto (Democratic) | 202-724-8058 | 100% |
Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
Local government
- District of Columbia website: https://dc.gov/
- District of Columbia laws: search for the District of Columbia, District of Columbia code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| Ward 2 | 100% |
Voting precincts
1 voting precinct overlap ZIP 20551. Map them, with each precinct's share of the ZIP's residents.
Get this in your AI agent
Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:20551")
ZIP 20551 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.