ZIP Code 21048 — Finksburg, MD
21048 is a standard (street delivery) ZIP code serving Finksburg, Maryland, in Carroll 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 21048 at a glance
| ZIP code | 21048 |
|---|---|
| Primary city | Finksburg |
| State | Maryland (MD) |
| County | Carroll FIPS 24013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 10,481 |
| Coordinates | 39.495680, -76.910570 |
How ZIP+4 works in 21048
The four digits after the hyphen encode a delivery segment inside 21048. 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 21048 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 21048.
| ZIP | City | Distance |
|---|---|---|
| 21157 | Westminster, MD | 5.3 mi |
| 21136 | Reisterstown, MD | 5.4 mi |
| 21071 | Glyndon, MD | 5.5 mi |
| 21784 | Sykesville, MD | 7.3 mi |
| 21155 | Upperco, MD | 7.7 mi |
| 21117 | Owings Mills, MD | 8.5 mi |
| 21074 | Hampstead, MD | 9.1 mi |
| 21023 | Butler, MD | 9.3 mi |
| 21133 | Randallstown, MD | 9.7 mi |
| 21104 | Marriottsville, MD | 10 mi |
| 21776 | New Windsor, MD | 10.4 mi |
| 21163 | Woodstock, MD | 11.1 mi |
Questions about 21048
What is the ZIP+4 code for 21048?
21048 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 21048, you need to look up a specific street address to get them.
What city is 21048?
21048 is assigned to Finksburg, Maryland, in Carroll 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.