ZIP Code 55940 — Hayfield, MN
55940 is a standard (street delivery) ZIP code serving Hayfield, Minnesota, in Dodge 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 55940 at a glance
| ZIP code | 55940 |
|---|---|
| Primary city | Hayfield |
| State | Minnesota (MN) |
| County | Dodge FIPS 27039 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,791 |
| Coordinates | 43.894170, -92.807750 |
How ZIP+4 works in 55940
The four digits after the hyphen encode a delivery segment inside 55940. 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 55940 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 55940.
| ZIP | City | Distance |
|---|---|---|
| 55973 | Sargeant, MN | 6.2 mi |
| 55982 | Waltham, MN | 6.7 mi |
| 55944 | Kasson, MN | 7.3 mi |
| 55927 | Dodge Center, MN | 10.1 mi |
| 55918 | Brownsdale, MN | 10.7 mi |
| 55926 | Dexter, MN | 11.6 mi |
| 55920 | Byron, MN | 12.4 mi |
| 55950 | Lansing, MN | 13 mi |
| 55917 | Blooming Prairie, MN | 13.1 mi |
| 55955 | Mantorville, MN | 14 mi |
| 55924 | Claremont, MN | 14.3 mi |
| 55902 | Rochester, MN | 15.4 mi |
Questions about 55940
What is the ZIP+4 code for 55940?
55940 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 55940, you need to look up a specific street address to get them.
What city is 55940?
55940 is assigned to Hayfield, Minnesota, in Dodge 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.