ZIP Code 47578 — Sandborn, IN
47578 is a standard (street delivery) ZIP code serving Sandborn, 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 47578 at a glance
| ZIP code | 47578 |
|---|---|
| Primary city | Sandborn |
| State | Indiana (IN) |
| County | Knox FIPS 18083 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Indiana/Vincennes |
| Population | 566 |
| Coordinates | 38.892880, -87.190550 |
How ZIP+4 works in 47578
The four digits after the hyphen encode a delivery segment inside 47578. 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 47578 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 47578.
| ZIP | City | Distance |
|---|---|---|
| 47596 | Westphalia, IN | 3.1 mi |
| 47528 | Edwardsport, IN | 5.3 mi |
| 47529 | Elnora, IN | 6.4 mi |
| 47535 | Freelandville, IN | 6.9 mi |
| 47443 | Lyons, IN | 7.4 mi |
| 47568 | Plainville, IN | 7.6 mi |
| 47441 | Linton, IN | 10.2 mi |
| 47512 | Bicknell, IN | 10.4 mi |
| 47848 | Dugger, IN | 10.9 mi |
| 47838 | Carlisle, IN | 11 mi |
| 47449 | Newberry, IN | 11.1 mi |
| 47562 | Odon, IN | 11.9 mi |
Questions about 47578
What is the ZIP+4 code for 47578?
47578 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 47578, you need to look up a specific street address to get them.
What city is 47578?
47578 is assigned to Sandborn, 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.