ZIP Code 46743 — Harlan, IN
46743 is a standard (street delivery) ZIP code serving Harlan, Indiana, in Allen 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 46743 at a glance
| ZIP code | 46743 |
|---|---|
| Primary city | Harlan |
| State | Indiana (IN) |
| County | Allen FIPS 18003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Indiana/Indianapolis |
| Population | 2,347 |
| Coordinates | 41.215110, -84.853210 |
How ZIP+4 works in 46743
The four digits after the hyphen encode a delivery segment inside 46743. 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 46743 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 46743.
| ZIP | City | Distance |
|---|---|---|
| 46788 | Spencerville, IN | 4.8 mi |
| 46741 | Grabill, IN | 5.1 mi |
| 46797 | Woodburn, IN | 6.1 mi |
| 45813 | Antwerp, OH | 6.6 mi |
| 46785 | Saint Joe, IN | 7.4 mi |
| 43526 | Hicksville, OH | 9.3 mi |
| 46765 | Leo, IN | 9.8 mi |
| 46774 | New Haven, IN | 10.5 mi |
| 46835 | Fort Wayne, IN | 10.9 mi |
| 45880 | Payne, OH | 11.9 mi |
| 46706 | Auburn, IN | 13.1 mi |
| 46845 | Fort Wayne, IN | 13.2 mi |
Questions about 46743
What is the ZIP+4 code for 46743?
46743 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 46743, you need to look up a specific street address to get them.
What city is 46743?
46743 is assigned to Harlan, Indiana, in Allen 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.