ZIP code 21720
Where is ZIP code 21720?
Cavetown, Maryland
Washington County · PO Box only ZIP code
ZIP code 21720 belongs to Cavetown, Maryland in Washington County. 21720 is a PO Box only ZIP code: it is used for post office boxes at the Cavetown post office, not for street addresses. It is in the Eastern Time zone and uses area code 240. The closest ZIP codes are 21783 (Smithsburg, 0.7 mi east), 21721 (Chewsville, 2.8 mi west) and 21742 (Hagerstown, 5.8 mi west).
| ZIP code | 21720 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Cavetown |
| State | Maryland (MD) |
| County | Washington County |
| Time zone | Eastern Time · now |
| Area code | 240 |
| Coordinates | 39.6473, -77.5842 map |
| 3-digit prefix | 217 |
The Census Bureau doesn’t publish population figures for po box only ZIP codes because nobody lives at a PO Box or a single organization’s address. For figures about the area, see the nearby standard ZIP codes below.
ZIP codes near 21720
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 21783 | Smithsburg, MD | 0.7 mi E | Standard |
| 21721 | Chewsville, MD | 2.8 mi W | PO Box only |
| 21742 | Hagerstown, MD | 5.8 mi W | Standard |
| 21719 | Cascade, MD | 5.8 mi NE | Standard |
| 21780 | Sabillasville, MD | 6.6 mi E | Standard |
| 17250 | Rouzerville, PA | 6.9 mi NE | PO Box only |
| 21734 | Funkstown, MD | 6.9 mi W | PO Box only |
| 21741 | Hagerstown, MD | 7.2 mi W | PO Box only |
| 21747 | Hagerstown, MD | 7.2 mi W | PO Box only |
| 21749 | Hagerstown, MD | 7.2 mi W | Unique |
| 17268 | Waynesboro, PA | 8.1 mi N | Standard |
| 21740 | Hagerstown, MD | 8.2 mi W | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 21720 or measure the distance to another ZIP code.
How to address mail to 21720
PO BOX 123
CAVETOWN MD 21720
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (21720-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 21720?
- 21720 is a Cavetown, Maryland ZIP code.
- What county is 21720 in?
- ZIP code 21720 is in Washington County, Maryland.
- What time zone is ZIP code 21720 in?
- 21720 is in the Eastern Time zone (America/New_York).
- What area code is 21720?
- Phone numbers in ZIP code 21720 use area code 240.
- Can I use 21720 for a street address?
- No. 21720 is only for PO Boxes. Street addresses in Cavetown use another ZIP code.
- What ZIP codes are near 21720?
- The nearest ZIP codes to 21720 are 21783 (Smithsburg, 0.7 miles), 21721 (Chewsville, 2.8 miles), 21742 (Hagerstown, 5.8 miles) and 21719 (Cascade, 5.8 miles).