ZIP Code 47231 — Dupont, IN
47231 is a standard (street delivery) ZIP code serving Dupont, Indiana, in Jefferson 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 47231 at a glance
| ZIP code | 47231 |
|---|---|
| Primary city | Dupont |
| State | Indiana (IN) |
| County | Jefferson FIPS 18077 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Indiana/Indianapolis |
| Population | 675 |
| Coordinates | 38.897920, -85.499600 |
How ZIP+4 works in 47231
The four digits after the hyphen encode a delivery segment inside 47231. 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 47231 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 47231.
| ZIP | City | Distance |
|---|---|---|
| 47282 | Vernon, IN | 8.5 mi |
| 47227 | Commiskey, IN | 8.6 mi |
| 47250 | Madison, IN | 9.5 mi |
| 47230 | Deputy, IN | 10 mi |
| 47265 | North Vernon, IN | 10.2 mi |
| 47223 | Butlerville, IN | 10.9 mi |
| 47270 | Paris Crossing, IN | 12.5 mi |
| 47023 | Holton, IN | 13.8 mi |
| 47224 | Canaan, IN | 14.8 mi |
| 47042 | Versailles, IN | 15.3 mi |
| 47243 | Hanover, IN | 15.6 mi |
| 47138 | Lexington, IN | 15.8 mi |
Questions about 47231
What is the ZIP+4 code for 47231?
47231 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 47231, you need to look up a specific street address to get them.
What city is 47231?
47231 is assigned to Dupont, Indiana, in Jefferson 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.