What city is 20901 in?

20901 is a Silver Spring, MD mailing address. By land area, 37% lies inside Silver Spring, 27% lies inside Four Corners, 16% lies inside Kemp Mill and 12% lies inside Burnt Mills.

What is the population of 20901?

About 36,435 people (±2,001), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 36,537.

What is the median household income in 20901?

$131,386 (±$12,228), compared with $103,678 for Maryland as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 20901?

33 USPS carrier routes with 13,058 residential and 361 business mailboxes (13,419 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 20901?

The closest, measured center to center: 20903 (1.6 mi, Hillandale), 20910 (1.9 mi, Silver Spring), 20902 (2.3 mi, Wheaton), 20912 (2.8 mi, Takoma Park), 20783 (2.9 mi, Adelphi) and 20012 (3.1 mi, Washington).

20901 ZIP Code, Silver Spring, MD

20901 is a ZIP code in Silver Spring, Maryland in Montgomery County. It covers 5.3 square miles of land. The closest ZIP codes are 20903, 20910 and 20902. 36,435 people live here in 13,114 households. At about 6,813 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (68% own). Median household income is $131,386, above the Maryland median of $103,678.

Quick facts

Mailing city: Silver Spring, MD
County: Montgomery County
Land area: 5.3 sq mi
Population: 36,435
Median household income: $131,386
Carrier routes: 33 (13,058 homes)

Key figures

Measure	Value
Residents	36,435
Households	13,114
Median household income	$131,386
Income per person	$59,829
Median age	39.5
Homeowners	68.1%
Median home value	$589,800
Median rent	$1,823
Bachelor's degree or higher	58.6%
Average commute (minutes)	32.9
Households with kids under 18	35.0%
Moved in the past year	12.0%
Below the poverty line	8.4%
Broadband internet	96.6%
Speak a non-English language at home	37.7%

Household income

% of households	Value
<$10K	3.3%
$10–15K	1.5%
$15–25K	2.8%
$25–35K	5.4%
$35–50K	4.7%
$50–75K	10.5%
$75–100K	8.4%
$100–150K	18.1%
$150–200K	12.8%
$200K+	32.5%

Age

% of all residents	Value
<10	12.2%
10–19	12.1%
20–24	5.9%
25–34	13.0%
35–44	16.6%
45–54	13.4%
55–64	12.3%
65–74	9.9%
75+	4.6%

Tenure

% of housing units	Value
Owned, with mortgage	51.1%
Owned outright	15.6%
Rented	30.6%
Vacant	2.8%

Type of building

% of housing units	Value
Detached house	61.1%
Townhome	10.7%
2–4 units	3.2%
5–19 units	10.9%
20+ units	13.7%
Mobile / other	0.3%

Businesses in 20901

506 business establishments with 4,184 employees (ZIP Codes Business Patterns 2023).

Health Care and Social Assistance: 99
Professional, Scientific, and Technical Services: 91
Other Services (except Public Administration): 69
Construction: 49
Retail Trade: 35
Administrative and Support and Waste Management and Remediation Services: 30
Real Estate and Rental and Leasing: 28
Accommodation and Food Services: 26

EDDM carrier routes

20901 has 33 USPS carrier routes with 13,058 residential and 361 business mailboxes. Open the EDDM route map.

Carrier routes in 20901

20901 has 33 USPS carrier routes (33 city (C)) with 13,058 residential and 361 business mailboxes. Routes range from 162 homes (C038) to 874 homes (C021); the median route has 343 homes. The Census counted 13,114 households in 20901 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	4
250–499	22
500–749	5
750–999	2
1,000–1,499	0
1,500+	0

Best routes in 20901 for…

Most businesses

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

Route C038 — USPS business mailboxes 82, 162 homes
Route C030 — USPS business mailboxes 57, 394 homes
Route C014 — USPS business mailboxes 45, 553 homes
Route C034 — USPS business mailboxes 43, 624 homes
Route C011 — USPS business mailboxes 41, 455 homes

Select these 5 routes on the route map

Every carrier route in 20901

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	298	21	$171,348	—	—	—
C002	City	656	1	$148,459	—	—	—
C003	City	311	0	$162,355	—	—	—
C004	City	255	4	$200,001+	—	—	—
C005	City	236	1	$200,001+	—	—	—
C006	City	797	3	$94,556	—	—	—
C007	City	469	10	$94,556	—	—	—
C008	City	320	0	$200,001+	—	—	—
C010	City	520	5	$188,707	—	—	—
C011	City	455	41	$76,576	—	—	—
C012	City	337	0	$189,366	—	—	—
C014	City	553	45	$188,707	—	—	—
C015	City	337	7	$189,366	—	—	—
C016	City	298	2	$171,348	—	—	—
C017	City	270	3	$200,001+	—	—	—
C018	City	380	4	$188,707	—	—	—
C019	City	371	2	$158,392	—	—	—
C020	City	648	4	$102,880	—	—	—
C021	City	874	5	$126,107	—	—	—
C022	City	256	2	$200,001+	—	—	—
C023	City	370	12	$162,355	—	—	—
C025	City	343	1	$200,001+	—	—	—
C026	City	310	1	$76,576	—	—	—
C027	City	367	1	$174,977	—	—	—
C028	City	342	1	$187,921	—	—	—
C030	City	394	57	$200,001+	—	—	—
C033	City	378	0	$171,348	—	—	—
C034	City	624	43	$126,107	—	—	—
C037	City	235	2	$148,459	—	—	—
C038	City	162	82	$167,003	—	—	—
C039	City	324	1	$62,831	—	—	—
C041	City	379	0	$188,707	—	—	—
C042	City	189	0	$167,003	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 20901 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

20903 — Hillandale CDP, MD (1.6 mi)
20910 — Silver Spring CDP, MD (1.9 mi)
20902 — Wheaton CDP, MD (2.3 mi)
20912 — Takoma Park city, MD (2.8 mi)
20783 — Adelphi CDP, MD (2.9 mi)
20012 — Washington city, DC (3.1 mi)
20895 — South Kensington CDP, MD (3.7 mi)
20904 — Colesville CDP, MD (3.8 mi)

Areas that include 20901

Silver Spring, MD ZIP codes — 8 ZIP codes
White Oak, MD ZIP codes — 3 ZIP codes
Kemp Mill, MD ZIP codes — 2 ZIP codes
Four Corners, MD ZIP codes — 1 ZIP code
Burnt Mills, MD ZIP codes — 2 ZIP codes
Montgomery County ZIP codes — 48 ZIP codes
Maryland ZIP code data

Where it ranks

Mail every home in 20901

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.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 20901, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 20901 in?: 20901 is a Silver Spring, MD mailing address. By land area, 37% lies inside Silver Spring, 27% lies inside Four Corners, 16% lies inside Kemp Mill and 12% lies inside Burnt Mills.
What county is 20901 in?: 20901 is in Montgomery County.
What is the population of 20901?: About 36,435 people (±2,001), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 36,537.
What is the median household income in 20901?: $131,386 (±$12,228), compared with $103,678 for Maryland as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 20901?: 33 USPS carrier routes with 13,058 residential and 361 business mailboxes (13,419 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 20901?: The closest, measured center to center: 20903 (1.6 mi, Hillandale), 20910 (1.9 mi, Silver Spring), 20902 (2.3 mi, Wheaton), 20912 (2.8 mi, Takoma Park), 20783 (2.9 mi, Adelphi) and 20012 (3.1 mi, Washington).

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