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US ZIP Code Profile

ZIP Code 20001
Washington, District of Columbia

ZIP code 20001 is in Washington, located in District Of Columbia County, District of Columbia, within the Washington-Arlington-Alexandria metro area. Its 2020 Census population was 49,040. The estimated median adjusted gross income per tax return is $77,365, and about 14% of filers report $200,000 or more.

2020 Population
49,040
Census ZCTA
County
District Of Columbia
FIPS 11001
Median income (est.)
$77,365
IRS SOI 2022
Land Area
2.184 mi²
+ 0.062 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
Coordinates38.910355, -77.01774
Land / Water Area2.184 mi² land · 0.062 mi² water

02Income & Economics

Distribution of the 25,570 individual tax returns filed in 20001 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
16.1%
$25K–$50K
16.0%
$50K–$75K
16.7%
$75K–$100K
13.0%
$100K–$200K
24.0%
$200K+
14.2%
The $200,000+ bracket accounts for 48% of 20001's total adjusted gross income, from 14% of returns — a concentration that drives the gap between the median ($77,365) 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 20001's IRS income metrics, 2020–2022.

Median income (2021→2022)
$77,365
▲ 6.8%
Filers earning $200K+
14.2%
▲ 1.3 pt
Total filers
25,570
▲ 1.2%
GET /zipc/v2/zipcodes/20001/soi?year=… $68K 2020 $72K 2021 $77K 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 20001 ZCTA.

2000
33,550
 
2010
38,551
▲ +14.9%
2020
49,040
▲ +27.2%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 20001. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 20001

Washington and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 20001 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 SortB
USPS Finance Number105000
City AliasesWashington

07Frequently Asked Questions

What county is ZIP code 20001 in?

ZIP code 20001 is in District Of Columbia County, District of Columbia (county FIPS code 11001).

What city is ZIP code 20001?

The primary USPS city for 20001 is Washington, DC.

What metro area (MSA) is 20001 in?

20001 is part of the Washington-Arlington-Alexandria, DC-VA-MD-WV Metro Area (MSA code 47900).

What is the population of ZIP code 20001?

The 2020 Census population of 20001 was 49,040 residents.

What is the median income in ZIP code 20001?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 20001 is about $77,365, with around 14% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.