ZIP Code 62231 — Carlyle, IL
62231 is a standard (street delivery) ZIP code serving Carlyle, Illinois, in Clinton 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 62231 at a glance
| ZIP code | 62231 |
|---|---|
| Primary city | Carlyle |
| State | Illinois (IL) |
| County | Clinton FIPS 17027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 6,377 |
| Coordinates | 38.644020, -89.326420 |
How ZIP+4 works in 62231
The four digits after the hyphen encode a delivery segment inside 62231. 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 62231 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 62231.
| ZIP | City | Distance |
|---|---|---|
| 62219 | Beckemeyer, IL | 6.6 mi |
| 62250 | Hoffman, IL | 7.9 mi |
| 62253 | Keyesport, IL | 9.2 mi |
| 62230 | Breese, IL | 10.8 mi |
| 62882 | Sandoval, IL | 11.2 mi |
| 62218 | Bartelso, IL | 11.8 mi |
| 62803 | Hoyleton, IL | 13.2 mi |
| 62875 | Patoka, IL | 13.4 mi |
| 62801 | Centralia, IL | 13.6 mi |
| 62245 | Germantown, IL | 14.9 mi |
| 62870 | Odin, IL | 14.9 mi |
| 62216 | Aviston, IL | 15 mi |
Questions about 62231
What is the ZIP+4 code for 62231?
62231 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 62231, you need to look up a specific street address to get them.
What city is 62231?
62231 is assigned to Carlyle, Illinois, in Clinton 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.