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US ZIP Code Profile

ZIP Code 20018
Washington, District of Columbia

ZIP code 20018 is in Washington, located in District Of Columbia County, District of Columbia, within the Washington-Arlington-Alexandria metro area. Its 2020 Census population was 20,646. The estimated median adjusted gross income per tax return is $57,969, and about 10% of filers report $200,000 or more.

2020 Population
20,646
Census ZCTA
County
District Of Columbia
FIPS 11001
Median income (est.)
$57,969
IRS SOI 2022
Land Area
3.022 mi²
+ 0.012 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
Coordinates38.926575, -76.97445
Land / Water Area3.022 mi² land · 0.012 mi² water

02Income & Economics

Distribution of the 10,200 individual tax returns filed in 20018 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
24.5%
$25K–$50K
20.5%
$50K–$75K
15.7%
$75K–$100K
10.1%
$100K–$200K
19.4%
$200K+
9.8%
The $200,000+ bracket accounts for 36% of 20018's total adjusted gross income, from 10% of returns — a concentration that drives the gap between the median ($57,969) 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 20018's IRS income metrics, 2020–2022.

Median income (2021→2022)
$57,969
▲ 8.0%
Filers earning $200K+
9.8%
▲ 1.3 pt
Total filers
10,200
▲ 1.8%
GET /zipc/v2/zipcodes/20018/soi?year=… $51K 2020 $54K 2021 $58K 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 20018 ZCTA.

2000
16,991
 
2010
16,894
▼ -0.6%
2020
20,646
▲ +22.2%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 20018. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 20018

Washington and its immediate neighbors, sorted by distance.

3 mi
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Distance from 20018 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 20018 in?

ZIP code 20018 is in District Of Columbia County, District of Columbia (county FIPS code 11001).

What city is ZIP code 20018?

The primary USPS city for 20018 is Washington, DC.

What metro area (MSA) is 20018 in?

20018 is part of the Washington-Arlington-Alexandria, DC-VA-MD-WV Metro Area (MSA code 47900).

What is the population of ZIP code 20018?

The 2020 Census population of 20018 was 20,646 residents.

What is the median income in ZIP code 20018?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 20018 is about $57,969, with around 10% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.