ZIP code · Washington · District of Columbia · United States

ZIP code 20004 — Washington

ZIP code 20004 serves Washington, District of Columbia.

Postal code
20004
Single source Value from one source, not cross-checked.
City
Washington
County
District of Columbia FIPS 11001
State
District of Columbia
Country
United States
Coordinates
38.8930, -77.0263 — precision precise (locality)
View on OpenStreetMap
Population
1,756 (ZCTA, ACS 5-year)
Population density
9,096 / sq mi
Land area
0.2 sq mi (0.5 km²) (ZCTA, ACS 5-year)
Median household income
$161,359
Per-capita income
$160,115
Median age
42.4
Households
1,251
Housing units
1,593
Median home value
$650,700
Median gross rent
$2,945 / month
Congressional district
DC — Delegate (non-voting) (119th Congress)
Time zone
America/New_York (UTC−5 / UTC−4 DST)
Area codes
202, 771
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Nearby localities

Climate — monthly normals

Warmest month Jul (avg high 90°F), coldest Jan (avg low 30°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F454857687785908881695849
Avg low °F303239485868727164524235
Precip in2.92.63.53.23.94.24.33.33.93.72.93.4

NOAA 1991–2020 climate normals from the nearest station: WASHINGTON REAGAN AP (3.1 mi) · NOAA NCEI

Places in ZIP 20004

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI. Data generated on 2026-08-21. Methodology · Report an error on this page