21740 ZIP Code, Hagerstown, MD

21740 is a ZIP code in Hagerstown, Maryland in Washington County. It covers 71 square miles of land. The closest ZIP codes are 21734, 21781 and 21767. 64,792 people live here in 25,276 households, which puts it among the most populous 1% of Maryland ZIP codes. With about 914 people per square mile it is lightly settled, and owners and renters are mixed (55% own). Median household income is $62,873, well below the Maryland median of $103,678.

Quick facts

Key figures

MeasureValue
Residents64,792
Households25,276
Median household income$62,873
Income per person$33,461
Median age37.9
Homeowners55.3%
Median home value$262,300
Median rent$1,080
Bachelor's degree or higher20.7%
Average commute (minutes)26.6
Households with kids under 1830.2%
Moved in the past year14.4%
Below the poverty line17.3%
Broadband internet87.3%
Speak a non-English language at home13.9%

Household income

% of householdsValue
<$10K6.0%
$10–15K4.3%
$15–25K8.7%
$25–35K9.7%
$35–50K11.0%
$50–75K16.8%
$75–100K13.4%
$100–150K15.7%
$150–200K8.6%
$200K+5.8%

Age

% of all residentsValue
<1012.9%
10–1911.8%
20–247.0%
25–3413.5%
35–4414.4%
45–5412.4%
55–6411.7%
65–749.5%
75+6.8%

Tenure

% of housing unitsValue
Owned, with mortgage34.1%
Owned outright17.7%
Rented40.8%
Vacant7.4%

Type of building

% of housing unitsValue
Detached house49.6%
Townhome22.4%
2–4 units10.6%
5–19 units10.9%
20+ units4.7%
Mobile / other1.9%

Businesses in 21740

1,814 business establishments with 36,427 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

21740 has 45 USPS carrier routes with 26,763 residential and 2,477 business mailboxes. Open the EDDM route map.

Carrier routes in 21740

21740 has 45 USPS carrier routes (32 city (C), 13 rural (R)) with 26,763 residential and 2,477 business mailboxes. Routes range from 128 homes (C005) to 921 homes (C021); the median route has 619 homes. The Census counted 25,276 households in 21740 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2491
250–4998
500–74932
750–9994
1,000–1,4990
1,500+0

Best routes in 21740 for…

Most businesses

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

  1. Route C001 — USPS business mailboxes 235, 386 homes
  2. Route C036 — USPS business mailboxes 215, 588 homes
  3. Route C002 — USPS business mailboxes 147, 634 homes
  4. Route R021 — USPS business mailboxes 138, 732 homes
  5. Route C013 — USPS business mailboxes 130, 458 homes

Select these 5 routes on the route map

Every carrier route in 21740

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City386235$21,046———
C002City634147$21,046———
C003City81039$17,479———
C004City66017$26,855———
C005City1286$43,032———
C008City63515$43,297———
C009City68263$69,766———
C010City56114$55,159———
C012City451109$55,709———
C013City458130$55,894———
C014City70717$55,159———
C015City63742$55,709———
C016City50357$26,855———
C017City4751$51,425———
C018City39918$104,888———
C019City64623$55,159———
C020City629100$56,498———
C021City92127$55,159———
C022City71512$37,014———
C023City62958$46,684———
C024City49342$104,888———
C025City43339$59,711———
C026City49047$59,711———
C028City57364$54,274———
C030City56131$46,367———
C032City54483$26,855———
C033City650118$17,479———
C035City5102$75,731———
C036City588215$55,204———
C039City64324$55,159———
C040City57051$79,694———
C041City756103$27,639———
R001Rural58214$166,986———
R002Rural52273$79,694———
R003Rural58964$96,000———
R004Rural65013$157,248———
R006Rural63339$52,802———
R009Rural8221$55,709———
R013Rural52355$55,894———
R014Rural61945$79,694———
R016Rural60114$99,434———
R017Rural62234$79,694———
R020Rural72836$121,010———
R021Rural732138$96,000———
R023Rural6632$80,667———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 21740 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

Areas that include 21740

Where it ranks

Mail every home in 21740

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) 21740, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 21740 in?
21740 is a Hagerstown, MD mailing address. By land area, 14% lies inside Hagerstown, 6% lies inside St. James, 5% lies inside Wilson-Conococheague and 4% lies inside Halfway; the rest is outside any Census-defined city or community.
What county is 21740 in?
21740 is in Washington County.
What is the population of 21740?
About 64,792 people (±2,243), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 65,619.
What is the median household income in 21740?
$62,873 (±$3,730), 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 21740?
45 USPS carrier routes with 26,763 residential and 2,477 business mailboxes (29,238 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 21740?
The closest, measured center to center: 21734 (2.8 mi, Funkstown), 21781 (4.3 mi, St. James), 21767 (4.6 mi, Maugansville), 21746 (4.8 mi), 21795 (5.5 mi, Halfway) and 21733 (5.7 mi, St. James).

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