ZIP code 20004: Washington, DC
ZIP code 20004 is in Washington, in District of Columbia, District of Columbia. 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
| City or town | Share of ZIP residents |
|---|---|
| Washington | 100% |
| 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% |
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| Ward 2 | 100% |
Voting precincts
1 voting precinct overlap ZIP 20004. 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:20004")
ZIP 20004 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.