ZIP CodesZIP codes in Washington County, Maryland
Washington County, Maryland has 23 ZIP codes in this list, from 21711 to 21795. They cover 18 places, among them Hagerstown, Big Pool, Boonsboro and Brownsville.
Nothing in this county matches.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 21711 | Big Pool | 24.6 | 39.646, -78.010 |
| 21713 | Boonsboro | 39.6 | 39.552, -77.696 |
| 21715 | Brownsville | 0.2 | 39.387, -77.658 |
| 21719 | Cascade | 4.1 | 39.696, -77.496 |
| 21720 | Cavetown | no area | 39.647, -77.584 |
| 21721 | Chewsville | no area | 39.642, -77.637 |
| 21722 | Clear Spring | 56.9 | 39.666, -77.906 |
| 21733 | Fairplay | 5.8 | 39.559, -77.760 |
| 21734 | Funkstown | 0.5 | 39.609, -77.704 |
| 21740 | Hagerstown | 70.9 | 39.632, -77.737 |
| 21741 | Hagerstown | no area | 39.642, -77.720 |
| 21742 | Hagerstown | 46.5 | 39.657, -77.692 |
| 21746 | Hagerstown | 0.3 | 39.564, -77.721 |
| 21747 | Hagerstown | no area | 39.642, -77.720 |
| 21749 | Hagerstown | no area | 39.642, -77.720 |
| 21750 | Hancock | 61.6 | 39.699, -78.176 |
| 21756 | Keedysville | 23.3 | 39.456, -77.694 |
| 21767 | Maugansville | 0.3 | 39.700, -77.750 |
| 21779 | Rohrersville | 9.7 | 39.443, -77.658 |
| 21781 | Saint James | 0.2 | 39.570, -77.761 |
| 21782 | Sharpsburg | 29.3 | 39.442, -77.751 |
| 21783 | Smithsburg | 47.6 | 39.647, -77.571 |
| 21795 | Williamsport | 32.1 | 39.593, -77.809 |
The ZIP code areas of Washington County add up to about 454 square miles of land (1,175 sq km) as the Census Bureau draws them. The largest is 21740 (Hagerstown), with 70.9 square miles.
Places with more than one code here: Hagerstown (6 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Big Pool, MD 21711.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.