ZIP Code 49801 — Iron Mountain, MI
49801 is a standard (street delivery) ZIP code serving Iron Mountain, Michigan, in Dickinson 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 49801 at a glance
| ZIP code | 49801 |
|---|---|
| Primary city | Iron Mountain |
| State | Michigan (MI) |
| County | Dickinson FIPS 26043 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Menominee |
| Population | 11,860 |
| Coordinates | 45.919100, -88.017950 |
How ZIP+4 works in 49801
The four digits after the hyphen encode a delivery segment inside 49801. 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 49801 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 49801.
| ZIP | City | Distance |
|---|---|---|
| 49870 | Norway, MI | 6.5 mi |
| 49876 | Quinnesec, MI | 8.3 mi |
| 49802 | Kingsford, MI | 8.7 mi |
| 49881 | Sagola, MI | 11 mi |
| 49852 | Loretto, MI | 13.4 mi |
| 54151 | Niagara, WI | 13.5 mi |
| 49892 | Vulcan, MI | 15.4 mi |
| 54121 | Florence, WI | 15.4 mi |
| 49834 | Foster City, MI | 15.5 mi |
| 49831 | Felch, MI | 16.6 mi |
| 49815 | Channing, MI | 18.5 mi |
| 49902 | Alpha, MI | 19.4 mi |
Questions about 49801
What is the ZIP+4 code for 49801?
49801 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 49801, you need to look up a specific street address to get them.
What city is 49801?
49801 is assigned to Iron Mountain, Michigan, in Dickinson 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.