ZIP Code 56121 — Ceylon, MN
56121 is a standard (street delivery) ZIP code serving Ceylon, Minnesota, in Martin 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 56121 at a glance
| ZIP code | 56121 |
|---|---|
| Primary city | Ceylon |
| State | Minnesota (MN) |
| County | Martin FIPS 27091 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 590 |
| Coordinates | 43.538580, -94.610510 |
How ZIP+4 works in 56121
The four digits after the hyphen encode a delivery segment inside 56121. 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 56121 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 56121.
| ZIP | City | Distance |
|---|---|---|
| 50531 | Dolliver, IA | 5.5 mi |
| 56127 | Dunnell, MN | 8.1 mi |
| 56031 | Fairmont, MN | 9.2 mi |
| 56181 | Welcome, MN | 9.7 mi |
| 50514 | Armstrong, IA | 11 mi |
| 56171 | Sherburn, MN | 11.7 mi |
| 51334 | Estherville, IA | 13.5 mi |
| 56111 | Alpha, MN | 15.2 mi |
| 56075 | Northrop, MN | 16.1 mi |
| 50578 | Ringsted, IA | 16.7 mi |
| 56039 | Granada, MN | 16.7 mi |
| 51365 | Wallingford, IA | 17.2 mi |
Questions about 56121
What is the ZIP+4 code for 56121?
56121 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 56121, you need to look up a specific street address to get them.
What city is 56121?
56121 is assigned to Ceylon, Minnesota, in Martin 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.