ZIP Code 62638 — Franklin, IL
62638 is a standard (street delivery) ZIP code serving Franklin, Illinois, in Morgan 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 62638 at a glance
| ZIP code | 62638 |
|---|---|
| Primary city | Franklin |
| State | Illinois (IL) |
| County | Morgan FIPS 17137 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,485 |
| Coordinates | 39.607140, -90.082260 |
How ZIP+4 works in 62638
The four digits after the hyphen encode a delivery segment inside 62638. 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 62638 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 62638.
| ZIP | City | Distance |
|---|---|---|
| 62695 | Woodson, IL | 7.6 mi |
| 62692 | Waverly, IL | 7.8 mi |
| 62668 | Murrayville, IL | 8.5 mi |
| 62667 | Modesto, IL | 9.2 mi |
| 62601 | Alexander, IL | 10.1 mi |
| 62650 | Jacksonville, IL | 11.6 mi |
| 62674 | Palmyra, IL | 12.2 mi |
| 62661 | Loami, IL | 13.5 mi |
| 62670 | New Berlin, IL | 13.7 mi |
| 62663 | Manchester, IL | 13.8 mi |
| 62082 | Roodhouse, IL | 14.9 mi |
| 62649 | Hettick, IL | 16.8 mi |
Questions about 62638
What is the ZIP+4 code for 62638?
62638 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 62638, you need to look up a specific street address to get them.
What city is 62638?
62638 is assigned to Franklin, Illinois, in Morgan 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.