ZIP Code 62285 — Smithton, IL
62285 is a standard (street delivery) ZIP code serving Smithton, Illinois, in St. Clair 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 62285 at a glance
| ZIP code | 62285 |
|---|---|
| Primary city | Smithton |
| State | Illinois (IL) |
| County | St. Clair FIPS 17163 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 4,239 |
| Coordinates | 38.388450, -90.007730 |
How ZIP+4 works in 62285
The four digits after the hyphen encode a delivery segment inside 62285. 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 62285 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 62285.
| ZIP | City | Distance |
|---|---|---|
| 62248 | Hecker, IL | 5.8 mi |
| 62220 | Belleville, IL | 5.9 mi |
| 62243 | Freeburg, IL | 6.7 mi |
| 62260 | Millstadt, IL | 7 mi |
| 62264 | New Athens, IL | 7.4 mi |
| 62298 | Waterloo, IL | 9.5 mi |
| 62226 | Belleville, IL | 10.2 mi |
| 62221 | Belleville, IL | 10.3 mi |
| 62223 | Belleville, IL | 10.5 mi |
| 62236 | Columbia, IL | 11.5 mi |
| 62278 | Red Bud, IL | 12.7 mi |
| 62239 | Dupo, IL | 13.4 mi |
Questions about 62285
What is the ZIP+4 code for 62285?
62285 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 62285, you need to look up a specific street address to get them.
What city is 62285?
62285 is assigned to Smithton, Illinois, in St. Clair 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.