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US ZIP Code Profile

ZIP Code 20004
Washington, District of Columbia

ZIP code 20004 is in Washington, located in District Of Columbia County, District of Columbia, within the Washington-Arlington-Alexandria metro area. Its 2020 Census population was 1,682. The estimated median adjusted gross income per tax return is $122,727, and about 24% of filers report $200,000 or more.

2020 Population
1,682
Census ZCTA
County
District Of Columbia
FIPS 11001
Median income (est.)
$122,727
IRS SOI 2022
Land Area
0.348 mi²
+ 0 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityWashington, DC
CountyDistrict Of Columbia County (FIPS 11001)
StateDistrict of Columbia (FIPS 11)
Metro Area (MSA)Washington-Arlington-Alexandria, DC-VA-MD-WV Metro Area (47900)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates38.894886, -77.02864
Land / Water Area0.348 mi² land · 0 mi² water

02Income & Economics

Distribution of the 970 individual tax returns filed in 20004 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
9.3%
$25K–$50K
7.2%
$50K–$75K
12.4%
$75K–$100K
13.4%
$100K–$200K
34.0%
$200K+
23.7%
The $200,000+ bracket accounts for 70% of 20004's total adjusted gross income, from 24% of returns — a concentration that drives the gap between the median ($122,727) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 20004's IRS income metrics, 2020–2022.

Median income (2021→2022)
$122,727
▲ 0.0%
Filers earning $200K+
23.7%
▲ 0.6 pt
Total filers
970
▲ 2.1%
GET /zipc/v2/zipcodes/20004/soi?year=… $121K 2020 $123K 2021 $123K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 20004 ZCTA.

2000
901
 
2010
1,622
▲ +80.0%
2020
1,682
▲ +3.7%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 20004. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 20004

Washington and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 20004 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number105000
City AliasesWashington

07Frequently Asked Questions

What county is ZIP code 20004 in?

ZIP code 20004 is in District Of Columbia County, District of Columbia (county FIPS code 11001).

What city is ZIP code 20004?

The primary USPS city for 20004 is Washington, DC.

What metro area (MSA) is 20004 in?

20004 is part of the Washington-Arlington-Alexandria, DC-VA-MD-WV Metro Area (MSA code 47900).

What is the population of ZIP code 20004?

The 2020 Census population of 20004 was 1,682 residents.

What is the median income in ZIP code 20004?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 20004 is about $122,727, with around 24% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.