ZIP Code 46391 — Westville, IN
46391 is a standard (street delivery) ZIP code serving Westville, Indiana, in LaPorte 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 46391 at a glance
| ZIP code | 46391 |
|---|---|
| Primary city | Westville |
| State | Indiana (IN) |
| County | LaPorte FIPS 18091 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 8,986 |
| Coordinates | 41.545500, -86.914460 |
How ZIP+4 works in 46391
The four digits after the hyphen encode a delivery segment inside 46391. 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 46391 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 46391.
| ZIP | City | Distance |
|---|---|---|
| 46383 | Valparaiso, IN | 7.5 mi |
| 46304 | Chesterton, IN | 8.4 mi |
| 46390 | Wanatah, IN | 9.1 mi |
| 46382 | Union Mills, IN | 9.5 mi |
| 46360 | Michigan City, IN | 10.1 mi |
| 46301 | Beverly Shores, IN | 10.2 mi |
| 46350 | La Porte, IN | 10.8 mi |
| 46345 | Kingsbury, IN | 11.1 mi |
| 46385 | Valparaiso, IN | 12.2 mi |
| 46346 | Kingsford Heights, IN | 12.3 mi |
| 46393 | Wheeler, IN | 13.3 mi |
| 46340 | Hanna, IN | 13.5 mi |
Questions about 46391
What is the ZIP+4 code for 46391?
46391 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 46391, you need to look up a specific street address to get them.
What city is 46391?
46391 is assigned to Westville, Indiana, in LaPorte 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.