District of Columbia: cities, counties, ZIP codes and districts
District of Columbia has 1 congressional district, 8 state senate districts (a single-house legislature) under the maps in force for November 3, 2026, plus 144 voting precincts, 1 counties, 1 cities, towns and Census-designated places, and 57 ZIP codes.
Cities and towns
Largest first. Each page lists the city's county, districts and ZIP codes.
Congressional districts (2026)
| District | Short | 2020 population |
|---|---|---|
| District of Columbia's at-large congressional district | DC-AL | 689,545 |
ZIP codes in District of Columbia
Each page lists the ZIP's congressional and legislative districts, with population shares where it's split.
- 20001
- 20002
- 20003
- 20004
- 20005
- 20006
- 20007
- 20008
- 20009
- 20010
- 20011
- 20012
- 20015
- 20016
- 20017
- 20018
- 20019
- 20020
- 20024
- 20032
- 20036
- 20037
- 20045
- 20052
- 20057
- 20059
- 20064
- 20204
- 20220
- 20230
- 20240
- 20245
- 20250
- 20260
- 20317
- 20319
- 20373
- 20388
- 20390
- 20408
- 20415
- 20418
- 20422
- 20427
- 20431
- 20510
- 20515
- 20520
- 20530
- 20535
- 20540
- 20542
- 20551
- 20560
- 20565
- 20566
- 20591
Get this in your AI agent
Your agent can list, look up and map every district and precinct in District of Columbia. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
list_geographies(country="US", level="congressional_district", region="DC")