ZIP Code 55723 — Cook, MN
55723 is a standard (street delivery) ZIP code serving Cook, Minnesota, in St. Louis 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 55723 at a glance
| ZIP code | 55723 |
|---|---|
| Primary city | Cook |
| State | Minnesota (MN) |
| County | St. Louis FIPS 27137 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,927 |
| Coordinates | 47.837640, -92.867150 |
How ZIP+4 works in 55723
The four digits after the hyphen encode a delivery segment inside 55723. 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 55723 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 55723.
| ZIP | City | Distance |
|---|---|---|
| 55703 | Angora, MN | 7.9 mi |
| 55781 | Side Lake, MN | 14.4 mi |
| 55710 | Britt, MN | 15.5 mi |
| 55719 | Chisholm, MN | 19.6 mi |
| 55771 | Orr, MN | 20 mi |
| 55772 | Nett Lake, MN | 21.7 mi |
| 55790 | Tower, MN | 22.8 mi |
| 55758 | Kinney, MN | 23.7 mi |
| 55768 | Mountain Iron, MN | 24.1 mi |
| 55792 | Virginia, MN | 24.2 mi |
| 55713 | Buhl, MN | 24.5 mi |
| 55769 | Nashwauk, MN | 28.8 mi |
Questions about 55723
What is the ZIP+4 code for 55723?
55723 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 55723, you need to look up a specific street address to get them.
What city is 55723?
55723 is assigned to Cook, Minnesota, in St. Louis 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.