ZIP Code 56055 — Lake Crystal, MN
56055 is a standard (street delivery) ZIP code serving Lake Crystal, Minnesota, in Blue Earth 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 56055 at a glance
| ZIP code | 56055 |
|---|---|
| Primary city | Lake Crystal |
| State | Minnesota (MN) |
| County | Blue Earth FIPS 27013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 3,898 |
| Coordinates | 44.126930, -94.245310 |
How ZIP+4 works in 56055
The four digits after the hyphen encode a delivery segment inside 56055. 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 56055 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 56055.
| ZIP | City | Distance |
|---|---|---|
| 56034 | Garden City, MN | 7.3 mi |
| 56003 | Mankato, MN | 9.8 mi |
| 56062 | Madelia, MN | 10 mi |
| 56021 | Courtland, MN | 11.3 mi |
| 56090 | Vernon Center, MN | 11.6 mi |
| 56037 | Good Thunder, MN | 12.4 mi |
| 56001 | Mankato, MN | 13.2 mi |
| 56074 | Nicollet, MN | 13.7 mi |
| 56041 | Hanska, MN | 13.9 mi |
| 56060 | Lewisville, MN | 16.4 mi |
| 56010 | Amboy, MN | 16.6 mi |
| 56073 | New Ulm, MN | 16.7 mi |
Questions about 56055
What is the ZIP+4 code for 56055?
56055 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 56055, you need to look up a specific street address to get them.
What city is 56055?
56055 is assigned to Lake Crystal, Minnesota, in Blue Earth 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.