ZIP Code 46181 — Trafalgar, IN
46181 is a standard (street delivery) ZIP code serving Trafalgar, Indiana, in Johnson 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 46181 at a glance
| ZIP code | 46181 |
|---|---|
| Primary city | Trafalgar |
| State | Indiana (IN) |
| County | Johnson FIPS 18081 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Indiana/Indianapolis |
| Population | 4,964 |
| Coordinates | 39.380440, -86.161190 |
How ZIP+4 works in 46181
The four digits after the hyphen encode a delivery segment inside 46181. 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 46181 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 46181.
| ZIP | City | Distance |
|---|---|---|
| 46164 | Nineveh, IN | 5.7 mi |
| 46160 | Morgantown, IN | 6 mi |
| 46131 | Franklin, IN | 8.9 mi |
| 46106 | Bargersville, IN | 9.6 mi |
| 47435 | Helmsburg, IN | 10.7 mi |
| 46124 | Edinburgh, IN | 11.5 mi |
| 47280 | Taylorsville, IN | 12.6 mi |
| 46184 | Whiteland, IN | 13.2 mi |
| 47468 | Unionville, IN | 14.8 mi |
| 47448 | Nashville, IN | 14.8 mi |
| 46151 | Martinsville, IN | 14.9 mi |
| 46143 | Greenwood, IN | 15 mi |
Questions about 46181
What is the ZIP+4 code for 46181?
46181 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 46181, you need to look up a specific street address to get them.
What city is 46181?
46181 is assigned to Trafalgar, Indiana, in Johnson 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.