ZIP Code 47561 — Oaktown, IN
47561 is a standard (street delivery) ZIP code serving Oaktown, Indiana, in Knox 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 47561 at a glance
| ZIP code | 47561 |
|---|---|
| Primary city | Oaktown |
| State | Indiana (IN) |
| County | Knox FIPS 18083 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Indiana/Vincennes |
| Population | 1,442 |
| Coordinates | 38.857050, -87.436110 |
How ZIP+4 works in 47561
The four digits after the hyphen encode a delivery segment inside 47561. 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 47561 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 47561.
| ZIP | City | Distance |
|---|---|---|
| 47516 | Bruceville, IN | 6.5 mi |
| 47535 | Freelandville, IN | 6.6 mi |
| 47838 | Carlisle, IN | 7.6 mi |
| 47512 | Bicknell, IN | 8.3 mi |
| 47528 | Edwardsport, IN | 9.1 mi |
| 47573 | Ragsdale, IN | 9.9 mi |
| 47596 | Westphalia, IN | 10.9 mi |
| 47865 | Paxton, IN | 11.4 mi |
| 62427 | Flat Rock, IL | 12 mi |
| 62439 | Lawrenceville, IL | 13.2 mi |
| 62451 | Palestine, IL | 13.2 mi |
| 47578 | Sandborn, IN | 13.4 mi |
Questions about 47561
What is the ZIP+4 code for 47561?
47561 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 47561, you need to look up a specific street address to get them.
What city is 47561?
47561 is assigned to Oaktown, Indiana, in Knox 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.