ZIP Code 55057 — Northfield, MN
55057 is a standard (street delivery) ZIP code serving Northfield, Minnesota, in Rice 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 55057 at a glance
| ZIP code | 55057 |
|---|---|
| Primary city | Northfield |
| State | Minnesota (MN) |
| County | Rice FIPS 27131 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 25,650 |
| Coordinates | 44.472810, -93.179390 |
How ZIP+4 works in 55057
The four digits after the hyphen encode a delivery segment inside 55057. 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 55057 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 55057.
| ZIP | City | Distance |
|---|---|---|
| 55019 | Dundas, MN | 5.4 mi |
| 55065 | Randolph, MN | 9.4 mi |
| 55018 | Dennison, MN | 10.1 mi |
| 55053 | Nerstrand, MN | 10.2 mi |
| 55088 | Webster, MN | 10.8 mi |
| 55054 | Elko New Market, MN | 10.8 mi |
| 55024 | Farmington, MN | 10.9 mi |
| 55046 | Lonsdale, MN | 11.8 mi |
| 55020 | Elko New Market, MN | 12 mi |
| 55044 | Lakeville, MN | 12.6 mi |
| 55021 | Faribault, MN | 13 mi |
| 55031 | Hampton, MN | 14 mi |
Questions about 55057
What is the ZIP+4 code for 55057?
55057 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 55057, you need to look up a specific street address to get them.
What city is 55057?
55057 is assigned to Northfield, Minnesota, in Rice 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.