ZIP Code 47123 — Grantsburg, IN
47123 is a standard (street delivery) ZIP code serving Grantsburg, Indiana, in Crawford 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 47123 at a glance
| ZIP code | 47123 |
|---|---|
| Primary city | Grantsburg |
| State | Indiana (IN) |
| County | Crawford FIPS 18025 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Indiana/Marengo |
| Population | 68 |
| Coordinates | 38.285600, -86.471810 |
How ZIP+4 works in 47123
The four digits after the hyphen encode a delivery segment inside 47123. 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 47123 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 47123.
| ZIP | City | Distance |
|---|---|---|
| 47118 | English, IN | 1.1 mi |
| 47174 | Sulphur, IN | 4.1 mi |
| 47175 | Taswell, IN | 6.7 mi |
| 47116 | Eckerty, IN | 8.3 mi |
| 47137 | Leavenworth, IN | 8.4 mi |
| 47140 | Marengo, IN | 8.6 mi |
| 47576 | Saint Croix, IN | 9.1 mi |
| 47145 | Milltown, IN | 9.8 mi |
| 47514 | Branchville, IN | 11.5 mi |
| 47513 | Birdseye, IN | 12.4 mi |
| 47551 | Leopold, IN | 12.4 mi |
| 47115 | Depauw, IN | 14.4 mi |
Questions about 47123
What is the ZIP+4 code for 47123?
47123 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 47123, you need to look up a specific street address to get them.
What city is 47123?
47123 is assigned to Grantsburg, Indiana, in Crawford 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.