What city is 20001 in?

20001 is a Washington, DC mailing address. By land area, 100% lies inside Washington.

What county is 20001 in?

20001 is in District of Columbia.

What is the population of 20001?

About 44,616 people (±2,137), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 49,040.

What is the median household income in 20001?

$138,059 (±$8,211), compared with $109,870 for District of Columbia as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 20001?

30 USPS carrier routes with 30,075 residential and 1,871 business mailboxes (31,950 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 20001?

The closest, measured center to center: 20005 (0.8 mi, Washington), 20059 (0.8 mi, Washington), 20535 (1.1 mi, Washington), 20004 (1.2 mi, Washington), 20009 (1.2 mi, Washington) and 20045 (1.2 mi, Washington).

20001 ZIP Code, Washington, DC

20001 is a ZIP code in Washington, District of Columbia in District of Columbia. It covers 2.0 square miles of land. The closest ZIP codes are 20005, 20059 and 20535. 44,616 people live here in 23,868 households. It is densely built, at about 21,796 people per square mile, and most households rent (33% own). Median household income is $138,059, above the District of Columbia median of $109,870; 26% of residents moved in during the past year.

Quick facts

Mailing city: Washington, DC
County: District of Columbia County
Land area: 2.0 sq mi
Population: 44,616
Median household income: $138,059
Carrier routes: 30 (30,075 homes)

Key figures

Measure	Value
Residents	44,616
Households	23,868
Median household income	$138,059
Income per person	$92,188
Median age	32.6
Homeowners	33.4%
Median home value	$852,600
Median rent	$2,499
Bachelor's degree or higher	77.5%
Average commute (minutes)	27.4
Households with kids under 18	10.8%
Moved in the past year	26.0%
Below the poverty line	13.5%
Broadband internet	94.1%
Speak a non-English language at home	18.4%

Household income

% of households	Value
<$10K	6.8%
$10–15K	3.6%
$15–25K	3.6%
$25–35K	3.5%
$35–50K	4.7%
$50–75K	6.3%
$75–100K	9.2%
$100–150K	16.2%
$150–200K	13.1%
$200K+	33.0%

Age

% of all residents	Value
<10	5.6%
10–19	7.2%
20–24	9.1%
25–34	35.2%
35–44	17.5%
45–54	10.0%
55–64	7.1%
65–74	5.2%
75+	3.1%

Tenure

% of housing units	Value
Owned, with mortgage	24.7%
Owned outright	5.0%
Rented	58.9%
Vacant	11.4%

Type of building

% of housing units	Value
Detached house	4.5%
Townhome	17.9%
2–4 units	11.8%
5–19 units	9.1%
20+ units	56.6%
Mobile / other	0.1%

Businesses in 20001

2,046 business establishments with 56,686 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 469
Other Services (except Public Administration): 391
Accommodation and Food Services: 346
Retail Trade: 147
Real Estate and Rental and Leasing: 119
Health Care and Social Assistance: 108
Information: 98
Finance and Insurance: 89

EDDM carrier routes

20001 has 30 USPS carrier routes with 30,075 residential and 1,871 business mailboxes. Open the EDDM route map.

Carrier routes in 20001

20001 has 30 USPS carrier routes (30 city (C)) with 30,075 residential and 1,871 business mailboxes. Routes range from 112 homes (C024) to 2,455 homes (C040); the median route has 797 homes. The Census counted 23,868 households in 20001 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	2
500–749	9
750–999	6
1,000–1,499	7
1,500+	5

Best routes in 20001 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route C041 — USPS business mailboxes 218, 416 homes
Route C027 — USPS business mailboxes 203, 904 homes
Route C012 — USPS business mailboxes 187, 914 homes
Route C019 — USPS business mailboxes 167, 728 homes
Route C003 — USPS business mailboxes 167, 406 homes

Select these 5 routes on the route map

Every carrier route in 20001

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	537	5	$191,538	—	—	—
C003	City	406	167	$119,702	—	—	—
C004	City	1,212	59	$115,236	—	—	—
C005	City	2,339	44	$147,862	—	—	—
C006	City	578	5	$175,271	—	—	—
C007	City	540	3	$108,177	—	—	—
C009	City	534	60	$68,864	—	—	—
C010	City	1,091	63	$135,434	—	—	—
C011	City	630	14	$155,273	—	—	—
C012	City	914	187	$115,236	—	—	—
C013	City	634	16	$127,174	—	—	—
C015	City	666	9	$152,075	—	—	—
C016	City	2,050	16	$200,001+	—	—	—
C018	City	793	142	$186,273	—	—	—
C019	City	728	167	$174,495	—	—	—
C020	City	1,703	35	$68,864	—	—	—
C021	City	1,420	56	$115,236	—	—	—
C022	City	801	22	$151,963	—	—	—
C024	City	112	0	$169,635	—	—	—
C025	City	1,065	53	$161,251	—	—	—
C026	City	551	22	$175,271	—	—	—
C027	City	904	203	$124,209	—	—	—
C031	City	790	25	$135,434	—	—	—
C033	City	1,603	49	$116,183	—	—	—
C034	City	1,299	37	$135,434	—	—	—
C036	City	1,485	61	$127,174	—	—	—
C038	City	763	30	$169,635	—	—	—
C040	City	2,455	62	$116,183	—	—	—
C041	City	416	218	$174,495	—	—	—
C042	City	1,056	41	$68,864	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 20001 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

20005 — Washington city, DC (0.8 mi)
20059 — Washington city, DC (0.8 mi)
20535 — Washington city, DC (1.1 mi)
20004 — Washington city, DC (1.2 mi)
20009 — Washington city, DC (1.2 mi)
20045 — Washington city, DC (1.2 mi)
20408 — Washington city, DC (1.2 mi)
20422 — Washington city, DC (1.2 mi)

Areas that include 20001

Washington, DC ZIP codes — 57 ZIP codes
District of Columbia County ZIP codes — 57 ZIP codes
District of Columbia ZIP code data

Where it ranks

Mail every home in 20001

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

Washington EDDM mailing

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 20001, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 20001 in?: 20001 is a Washington, DC mailing address. By land area, 100% lies inside Washington.
What county is 20001 in?: 20001 is in District of Columbia.
What is the population of 20001?: About 44,616 people (±2,137), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 49,040.
What is the median household income in 20001?: $138,059 (±$8,211), compared with $109,870 for District of Columbia as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 20001?: 30 USPS carrier routes with 30,075 residential and 1,871 business mailboxes (31,950 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 20001?: The closest, measured center to center: 20005 (0.8 mi, Washington), 20059 (0.8 mi, Washington), 20535 (1.1 mi, Washington), 20004 (1.2 mi, Washington), 20009 (1.2 mi, Washington) and 20045 (1.2 mi, Washington).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.