What city is 21536 in?

21536 is a Grantsville, MD mailing address. By land area, 1% lies inside Grantsville; the rest is outside any Census-defined city or community.

What is the population of 21536?

About 3,833 people (±389), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 4,029.

What is the median household income in 21536?

$64,205 (±$5,023), 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 21536?

3 USPS carrier routes with 1,489 residential and 99 business mailboxes (1,592 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 21536?

The closest, measured center to center: 15562 (6.5 mi), 15565 (7.5 mi), 21520 (7.7 mi, Accident), 15558 (8.6 mi, Salisbury borough, PA), 15532 (9.2 mi) and 21539 (9.3 mi, Lonaconing).

21536 ZIP Code, Grantsville, MD

21536 is a ZIP code in Grantsville, Maryland in Garrett County. It covers 98 square miles of land. The closest ZIP codes are 15562, 15565 and 21520. 3,833 people live here in 1,654 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (76%). Median household income is $64,205, well below the Maryland median of $103,678; the median age is 47.7, older than most ZIP codes.

Quick facts

Mailing city: Grantsville, MD
County: Garrett County
Land area: 98 sq mi
Population: 3,833
Median household income: $64,205
Carrier routes: 3 (1,489 homes)

Key figures

Measure	Value
Residents	3,833
Households	1,654
Median household income	$64,205
Income per person	$35,095
Median age	47.7
Homeowners	75.8%
Median home value	$201,300
Median rent	$664
Bachelor's degree or higher	18.4%
Average commute (minutes)	22.8
Households with kids under 18	23.1%
Moved in the past year	5.7%
Below the poverty line	14.1%
Broadband internet	80.0%
Speak a non-English language at home	1.7%

Household income

% of households	Value
<$10K	6.9%
$10–15K	8.0%
$15–25K	8.3%
$25–35K	10.3%
$35–50K	8.5%
$50–75K	18.7%
$75–100K	10.2%
$100–150K	17.4%
$150–200K	4.0%
$200K+	7.8%

Age

% of all residents	Value
<10	7.2%
10–19	12.9%
20–24	8.5%
25–34	8.6%
35–44	10.1%
45–54	16.7%
55–64	11.7%
65–74	10.0%
75+	14.4%

Tenure

% of housing units	Value
Owned, with mortgage	37.8%
Owned outright	33.7%
Rented	22.7%
Vacant	5.8%

Type of building

% of housing units	Value
Detached house	69.4%
Townhome	6.0%
2–4 units	5.0%
5–19 units	8.4%
20+ units	1.1%
Mobile / other	10.0%

Businesses in 21536

130 business establishments with 1,757 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 24
Transportation and Warehousing: 17
Construction: 16
Accommodation and Food Services: 13
Other Services (except Public Administration): 12
Manufacturing: 11
Health Care and Social Assistance: 9
Professional, Scientific, and Technical Services: 6

EDDM carrier routes

21536 has 3 USPS carrier routes with 1,489 residential and 99 business mailboxes. Open the EDDM route map.

Carrier routes in 21536

21536 has 3 USPS carrier routes (2 rural (R), 1 highway contract (H)) with 1,489 residential and 99 business mailboxes. Routes range from 389 homes (H001) to 591 homes (R001); the median route has 509 homes. The Census counted 1,654 households in 21536 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

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

Best routes in 21536 for…

Most businesses

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

Route R002 — USPS business mailboxes 35, 509 homes
Route R001 — USPS business mailboxes 34, 591 homes
Route H001 — USPS business mailboxes 30, 389 homes

Select these 3 routes on the route map

Every carrier route in 21536

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
H001	Highway contract	389	30	$73,166	—	—	—
R001	Rural	591	34	$53,744	—	—	—
R002	Rural	509	35	$73,166	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 21536 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

15562 (6.5 mi)
15565 (7.5 mi)
21520 — Accident town, MD (7.7 mi)
15558 — Salisbury borough, PA (8.6 mi)
15532 (9.2 mi)
21539 — Lonaconing town, MD (9.3 mi)
21532 — Finzel CDP, MD (9.6 mi)
21521 — Moscow CDP, MD (9.8 mi)

Areas that include 21536

Where it ranks

Mail every home in 21536

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) 21536, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 21536 in?: 21536 is a Grantsville, MD mailing address. By land area, 1% lies inside Grantsville; the rest is outside any Census-defined city or community.
What county is 21536 in?: 21536 is in Garrett County.
What is the population of 21536?: About 3,833 people (±389), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 4,029.
What is the median household income in 21536?: $64,205 (±$5,023), 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 21536?: 3 USPS carrier routes with 1,489 residential and 99 business mailboxes (1,592 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 21536?: The closest, measured center to center: 15562 (6.5 mi), 15565 (7.5 mi), 21520 (7.7 mi, Accident), 15558 (8.6 mi, Salisbury borough, PA), 15532 (9.2 mi) and 21539 (9.3 mi, Lonaconing).

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