ZIP Code 62401 — Effingham, IL
62401 is a standard (street delivery) ZIP code serving Effingham, Illinois, in Effingham 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 62401 at a glance
| ZIP code | 62401 |
|---|---|
| Primary city | Effingham |
| State | Illinois (IL) |
| County | Effingham FIPS 17049 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 19,273 |
| Coordinates | 39.118430, -88.564670 |
How ZIP+4 works in 62401
The four digits after the hyphen encode a delivery segment inside 62401. 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 62401 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 62401.
| ZIP | City | Distance |
|---|---|---|
| 62473 | Watson, IL | 6.8 mi |
| 62467 | Teutopolis, IL | 7 mi |
| 62461 | Shumway, IL | 8.2 mi |
| 62462 | Sigel, IL | 9.4 mi |
| 62411 | Altamont, IL | 9.5 mi |
| 62463 | Stewardson, IL | 11 mi |
| 62424 | Dieterich, IL | 11.8 mi |
| 62443 | Mason, IL | 11.9 mi |
| 62445 | Montrose, IL | 13.4 mi |
| 62444 | Mode, IL | 14.3 mi |
| 62414 | Beecher City, IL | 14.5 mi |
| 62479 | Wheeler, IL | 14.6 mi |
Questions about 62401
What is the ZIP+4 code for 62401?
62401 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 62401, you need to look up a specific street address to get them.
What city is 62401?
62401 is assigned to Effingham, Illinois, in Effingham 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.