ZIP Code 62257 — Marissa, IL
62257 is a standard (street delivery) ZIP code serving Marissa, 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 62257 at a glance
| ZIP code | 62257 |
|---|---|
| Primary city | Marissa |
| State | Illinois (IL) |
| County | St. Clair FIPS 17163 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,046 |
| Coordinates | 38.280480, -89.732620 |
How ZIP+4 works in 62257
The four digits after the hyphen encode a delivery segment inside 62257. 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 62257 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 62257.
| ZIP | City | Distance |
|---|---|---|
| 62255 | Lenzburg, IL | 3.3 mi |
| 62282 | Saint Libory, IL | 5.3 mi |
| 62292 | Tilden, IL | 5.4 mi |
| 62217 | Baldwin, IL | 9.4 mi |
| 62214 | Addieville, IL | 9.6 mi |
| 62264 | New Athens, IL | 9.8 mi |
| 62237 | Coulterville, IL | 10.7 mi |
| 62268 | Oakdale, IL | 11.2 mi |
| 62286 | Sparta, IL | 11.3 mi |
| 62258 | Mascoutah, IL | 12.6 mi |
| 62243 | Freeburg, IL | 12.8 mi |
| 62266 | New Memphis, IL | 14.1 mi |
Questions about 62257
What is the ZIP+4 code for 62257?
62257 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 62257, you need to look up a specific street address to get them.
What city is 62257?
62257 is assigned to Marissa, 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.