ZIP Code 59034 — Hardin, MT
59034 is a standard (street delivery) ZIP code serving Hardin, Montana, in Big Horn 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 59034 at a glance
| ZIP code | 59034 |
|---|---|
| Primary city | Hardin |
| State | Montana (MT) |
| County | Big Horn FIPS 30003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 5,008 |
| Coordinates | 45.701210, -107.707800 |
How ZIP+4 works in 59034
The four digits after the hyphen encode a delivery segment inside 59034. 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 59034 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 59034.
| ZIP | City | Distance |
|---|---|---|
| 59064 | Pompeys Pillar, MT | 14.7 mi |
| 59031 | Garryowen, MT | 21 mi |
| 59075 | Saint Xavier, MT | 21.6 mi |
| 59022 | Crow Agency, MT | 22.9 mi |
| 59006 | Ballantine, MT | 23.1 mi |
| 59037 | Huntley, MT | 26.3 mi |
| 59010 | Bighorn, MT | 27.1 mi |
| 59035 | Fort Smith, MT | 30.4 mi |
| 59050 | Lodge Grass, MT | 33 mi |
| 59088 | Worden, MT | 33.4 mi |
| 59038 | Hysham, MT | 40.8 mi |
Questions about 59034
What is the ZIP+4 code for 59034?
59034 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 59034, you need to look up a specific street address to get them.
What city is 59034?
59034 is assigned to Hardin, Montana, in Big Horn 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.