ZIP Code 55912 — Austin, MN
55912 is a standard (street delivery) ZIP code serving Austin, Minnesota, in Mower 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 55912 at a glance
| ZIP code | 55912 |
|---|---|
| Primary city | Austin |
| State | Minnesota (MN) |
| County | Mower FIPS 27099 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 29,632 |
| Coordinates | 43.682700, -92.991480 |
How ZIP+4 works in 55912
The four digits after the hyphen encode a delivery segment inside 55912. 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 55912 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 55912.
| ZIP | City | Distance |
|---|---|---|
| 55950 | Lansing, MN | 4.4 mi |
| 55918 | Brownsdale, MN | 8.3 mi |
| 55970 | Rose Creek, MN | 10 mi |
| 55982 | Waltham, MN | 10.6 mi |
| 55953 | Lyle, MN | 10.8 mi |
| 56043 | Hayward, MN | 12 mi |
| 56045 | Hollandale, MN | 12.1 mi |
| 55973 | Sargeant, MN | 14 mi |
| 55917 | Blooming Prairie, MN | 14.3 mi |
| 56036 | Glenville, MN | 14.6 mi |
| 55926 | Dexter, MN | 14.8 mi |
| 55909 | Adams, MN | 15.2 mi |
Questions about 55912
What is the ZIP+4 code for 55912?
55912 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 55912, you need to look up a specific street address to get them.
What city is 55912?
55912 is assigned to Austin, Minnesota, in Mower 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.