ZIP Code 62031 — Fieldon, IL
62031 is a standard (street delivery) ZIP code serving Fieldon, Illinois, in Jersey 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 62031 at a glance
| ZIP code | 62031 |
|---|---|
| Primary city | Fieldon |
| State | Illinois (IL) |
| County | Jersey FIPS 17083 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 517 |
| Coordinates | 39.112300, -90.533550 |
How ZIP+4 works in 62031
The four digits after the hyphen encode a delivery segment inside 62031. 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 62031 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 62031.
| ZIP | City | Distance |
|---|---|---|
| 62047 | Hardin, IL | 5 mi |
| 62006 | Batchtown, IL | 7.9 mi |
| 62037 | Grafton, IL | 8 mi |
| 62027 | Eldred, IL | 9.4 mi |
| 62013 | Brussels, IL | 10.4 mi |
| 62052 | Jerseyville, IL | 11.4 mi |
| 62054 | Kane, IL | 11.7 mi |
| 63347 | Foley, MO | 12.6 mi |
| 62022 | Dow, IL | 13.3 mi |
| 62036 | Golden Eagle, IL | 13.7 mi |
| 62045 | Hamburg, IL | 14 mi |
| 62016 | Carrollton, IL | 14.1 mi |
Questions about 62031
What is the ZIP+4 code for 62031?
62031 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 62031, you need to look up a specific street address to get them.
What city is 62031?
62031 is assigned to Fieldon, Illinois, in Jersey 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.