ZIP Code 21560 — Spring Gap, MD
21560 is a standard (street delivery) ZIP code serving Spring Gap, Maryland, in Allegany County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 21560 at a glance
| ZIP code | 21560 |
|---|---|
| Primary city | Spring Gap |
| State | Maryland (MD) |
| County | Allegany FIPS 24001 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 9 |
| Coordinates | 39.565080, -78.706320 |
How ZIP+4 works in 21560
The four digits after the hyphen encode a delivery segment inside 21560. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 21560 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 21560.
| ZIP | City | Distance |
|---|---|---|
| 26767 | Wiley Ford, WV | 4.4 mi |
| 26753 | Ridgeley, WV | 4.5 mi |
| 26719 | Fort Ashby, WV | 5.7 mi |
| 21502 | Cumberland, MD | 5.9 mi |
| 26722 | Green Spring, WV | 6 mi |
| 26763 | Springfield, WV | 6 mi |
| 21555 | Oldtown, MD | 8.1 mi |
| 25431 | Levels, WV | 8.9 mi |
| 21524 | Corriganville, MD | 11 mi |
| 21529 | Ellerslie, MD | 11.1 mi |
| 21557 | Rawlings, MD | 12 mi |
| 25437 | Points, WV | 12 mi |
Questions about 21560
What is the ZIP+4 code for 21560?
21560 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 21560, you need to look up a specific street address to get them.
What city is 21560?
21560 is assigned to Spring Gap, Maryland, in Allegany County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.