What city is 21713 in?

21713 is a Boonsboro, MD mailing address. By land area, 8% lies inside Boonsboro, 3% lies inside Mount Lena, 1% lies inside Fairplay and 1% lies inside San Mar; the rest is outside any Census-defined city or community.

What is the population of 21713?

About 9,846 people (±583), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 9,800.

What is the median household income in 21713?

$96,199 (±$12,908), 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 21713?

7 USPS carrier routes with 3,877 residential and 142 business mailboxes (4,020 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 21713?

The closest, measured center to center: 21746 (3.7 mi), 21756 (4.7 mi, Keedysville), 21733 (5 mi, St. James), 21781 (5.8 mi, St. James), 21734 (5.9 mi, Funkstown) and 21773 (6.4 mi, Myersville).

21713 ZIP Code, Boonsboro, MD

21713 is a ZIP code in Boonsboro, Maryland in Washington County. It covers 40 square miles of land. The closest ZIP codes are 21746, 21756 and 21733. 9,846 people live here in 3,899 households. With about 249 people per square mile it is lightly settled, and most homes are owner-occupied (84%). Median household income is $96,199, close to the Maryland median of $103,678; the median age is 45.5, older than most ZIP codes.

Quick facts

Mailing city: Boonsboro, MD
County: Washington County
Land area: 40 sq mi
Population: 9,846
Median household income: $96,199
Carrier routes: 7 (3,877 homes)

Key figures

Measure	Value
Residents	9,846
Households	3,899
Median household income	$96,199
Income per person	$50,005
Median age	45.5
Homeowners	83.6%
Median home value	$369,200
Median rent	$1,176
Bachelor's degree or higher	28.6%
Average commute (minutes)	31.4
Households with kids under 18	28.7%
Moved in the past year	11.2%
Below the poverty line	5.4%
Broadband internet	86.5%
Speak a non-English language at home	2.9%

Household income

% of households	Value
<$10K	2.1%
$10–15K	1.8%
$15–25K	4.9%
$25–35K	8.6%
$35–50K	9.6%
$50–75K	12.7%
$75–100K	13.2%
$100–150K	23.8%
$150–200K	11.2%
$200K+	12.2%

Age

% of all residents	Value
<10	9.1%
10–19	15.8%
20–24	4.1%
25–34	9.6%
35–44	10.4%
45–54	13.6%
55–64	14.0%
65–74	12.0%
75+	11.3%

Tenure

% of housing units	Value
Owned, with mortgage	57.3%
Owned outright	24.0%
Rented	15.7%
Vacant	2.9%

Type of building

% of housing units	Value
Detached house	86.9%
Townhome	5.0%
2–4 units	1.7%
5–19 units	3.7%
20+ units	0.0%
Mobile / other	2.8%

Businesses in 21713

186 business establishments with 1,803 employees (ZIP Codes Business Patterns 2023).

Construction: 32
Other Services (except Public Administration): 29
Retail Trade: 26
Health Care and Social Assistance: 18
Administrative and Support and Waste Management and Remediation Services: 15
Professional, Scientific, and Technical Services: 13
Accommodation and Food Services: 12
Finance and Insurance: 10

EDDM carrier routes

21713 has 7 USPS carrier routes with 3,877 residential and 142 business mailboxes. Open the EDDM route map.

Carrier routes in 21713

21713 has 7 USPS carrier routes (2 city (C), 5 rural (R)) with 3,877 residential and 142 business mailboxes. Routes range from 323 homes (C001) to 678 homes (C002); the median route has 576 homes. The Census counted 3,899 households in 21713 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	1
500–749	6
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 21713 for…

Most businesses

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

Route C002 — USPS business mailboxes 36, 678 homes
Route R004 — USPS business mailboxes 32, 537 homes
Route C001 — USPS business mailboxes 30, 323 homes
Route R002 — USPS business mailboxes 14, 598 homes
Route R001 — USPS business mailboxes 10, 598 homes

Select these 5 routes on the route map

Every carrier route in 21713

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	323	30	$102,854	—	—	—
C002	City	678	36	$97,682	—	—	—
R001	Rural	598	10	$77,472	—	—	—
R002	Rural	598	14	$166,986	—	—	—
R003	Rural	576	10	$104,530	—	—	—
R004	Rural	537	32	$91,152	—	—	—
R005	Rural	567	10	$122,140	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 21713 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

21746 (3.7 mi)
21756 — Keedysville town, MD (4.7 mi)
21733 — St. James CDP, MD (5 mi)
21781 — St. James CDP, MD (5.8 mi)
21734 — Funkstown town, MD (5.9 mi)
21773 — Myersville town, MD (6.4 mi)
21782 — Mercersville CDP, MD (6.8 mi)
21779 — Gapland CDP, MD (7 mi)

Areas that include 21713

Boonsboro, MD ZIP codes — 1 ZIP code
Fairplay, MD ZIP codes — 2 ZIP codes
Beaver Creek, MD ZIP codes — 2 ZIP codes
Mount Lena, MD ZIP codes — 1 ZIP code
Mapleville, MD ZIP codes — 1 ZIP code
San Mar, MD ZIP codes — 1 ZIP code
Tilghmanton, MD ZIP codes — 1 ZIP code
Breathedsville, MD ZIP codes — 1 ZIP code
Bakersville, MD ZIP codes — 1 ZIP code
Washington County ZIP codes — 19 ZIP codes
Maryland ZIP code data

Where it ranks

Mail every home in 21713

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) 21713, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 21713 in?: 21713 is a Boonsboro, MD mailing address. By land area, 8% lies inside Boonsboro, 3% lies inside Mount Lena, 1% lies inside Fairplay and 1% lies inside San Mar; the rest is outside any Census-defined city or community.
What county is 21713 in?: 21713 is in Washington County.
What is the population of 21713?: About 9,846 people (±583), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 9,800.
What is the median household income in 21713?: $96,199 (±$12,908), 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 21713?: 7 USPS carrier routes with 3,877 residential and 142 business mailboxes (4,020 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 21713?: The closest, measured center to center: 21746 (3.7 mi), 21756 (4.7 mi, Keedysville), 21733 (5 mi, St. James), 21781 (5.8 mi, St. James), 21734 (5.9 mi, Funkstown) and 21773 (6.4 mi, Myersville).

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