Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/MD/COUNTY/WASHINGTON

Washington County, MD ZIP codes

There are 23 ZIP codes in Washington County, MD, in 18 towns, from 21711 to 21795. The largest are 21740 (Hagerstown), 21742 (Hagerstown) and 21795 (Williamsport).

The county seat is Hagerstown.

ZIP codes
23
Towns
18
County seat
Hagerstown
County FIPS
24043
Population
155,709
Median household income
$77,747
Land area
458 sq mi
Area codes
227, 240, 301

Washington County ZIP codes by town

Hagerstown (county seat)
21740, 21741, 21742, 21746, 21747, 21749

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Washington County ZIP codes

2171121713217152171921720217212172221733217342174021741217422174621747217492175021756217672177921781217822178321795

The ZIP codes of Washington County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Washington County in numbers

About 155,709 people live in Washington County, in 59,818 households, the 11th most populous of Maryland's 24 counties. The median household income is $77,747 a year, 25% below the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $296,100 (29% below the Maryland median), and median gross rent is $1,147 a month. The median age is 40.7; 24.1% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 29 minutes.

Population155,709Washington155,709
Households59,818Washington59,818
Median age40.7Washington40.7Maryland39.4US 38.9
Median household income$77,747Washington$77,747Maryland$103,678US $80,734
Median home value$296,100Washington$296,100Maryland$419,900US $332,700
Median gross rent$1,147Washington$1,147Maryland$1,705US $1,413
Bachelor's degree or higher24.1%Washington24.1%Maryland43.4%US 35.7%
Mean commute28.8 minWashington28.8 minMaryland31.1 minUS 26.4 min
Population density340 / sq miWashington340 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Washington County

Largest towns in Washington County
TownZIP codesPopulation
Hagerstown 6 43,665
St. James 1 4,824
Boonsboro 1 3,809
Maugansville 1 3,624
Smithsburg 1 3,115
Williamsport 1 1,949
Hancock 1 1,625
Keedysville 1 1,183
Cascade 1 1,178
Funkstown 1 1,076
Cavetown 1 858
Sharpsburg 1 585
Fairplay 1 511
Clear Spring 1 342
Chewsville 1 314

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Washington County.

Not sure you are in Washington County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Washington County, with figures

ZIP codes in Washington County
ZIP City Type Population Median income Median home
21711 Big Pool , MD Standard 929 $91,250 $310,600
21713 Boonsboro , MD Standard 9,846 $96,199 $369,200
21715 Brownsville , MD Standard 20 — —
21719 Cascade , MD Standard 1,178 $65,809 $214,100
21720 Cavetown , MD No street area — — —
21721 Chewsville , MD No street area — — —
21722 Clear Spring , MD Standard 6,721 $88,232 $312,500
21733 Fairplay , MD Standard 1,275 $109,896 $291,800
21734 Funkstown , MD Standard 1,076 $61,392 $277,800
21740 Hagerstown , MD Standard 64,792 $62,873 $262,300
21741 Hagerstown , MD No street area — — —
21742 Hagerstown , MD Standard 34,069 $86,288 $304,800
21746 Hagerstown , MD Standard 2,361 — —
21747 Hagerstown , MD No street area — — —
21749 Hagerstown , MD No street area — — —
21750 Hancock , MD Standard 3,417 $60,625 $232,500
21756 Keedysville , MD Standard 3,640 $101,786 $413,200
21767 Maugansville , MD Standard 1,031 $57,940 $258,700
21779 Rohrersville , MD Standard 1,311 — $608,800
21781 Saint James , MD Standard 25 — —
21782 Sharpsburg , MD Standard 3,704 $94,130 $311,600
21783 Smithsburg , MD Standard 9,910 $100,750 $339,800
21795 Williamsport , MD Standard 10,144 $87,864 $295,800

Cite this page

zipcodes.pro. “Washington County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/md/county/washington

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