ZIP Code 62421 — Claremont, IL
62421 is a standard (street delivery) ZIP code serving Claremont, Illinois, in Richland 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 62421 at a glance
| ZIP code | 62421 |
|---|---|
| Primary city | Claremont |
| State | Illinois (IL) |
| County | Richland FIPS 17159 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 366 |
| Coordinates | 38.752190, -87.943450 |
How ZIP+4 works in 62421
The four digits after the hyphen encode a delivery segment inside 62421. 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 62421 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 62421.
| ZIP | City | Distance |
|---|---|---|
| 62466 | Sumner, IL | 5.3 mi |
| 62450 | Olney, IL | 8.2 mi |
| 62419 | Calhoun, IL | 9.2 mi |
| 62417 | Bridgeport, IL | 10 mi |
| 62425 | Dundas, IL | 10.3 mi |
| 62475 | West Liberty, IL | 10.7 mi |
| 62452 | Parkersburg, IL | 12.1 mi |
| 62459 | Sainte Marie, IL | 13.1 mi |
| 62476 | West Salem, IL | 15.4 mi |
| 62868 | Noble, IL | 16.2 mi |
| 62439 | Lawrenceville, IL | 16.5 mi |
| 62460 | Saint Francisville, IL | 16.7 mi |
Questions about 62421
What is the ZIP+4 code for 62421?
62421 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 62421, you need to look up a specific street address to get them.
What city is 62421?
62421 is assigned to Claremont, Illinois, in Richland 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.