ZIP Code 61858 — Oakwood, IL
61858 is a standard (street delivery) ZIP code serving Oakwood, Illinois, in Vermilion 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 61858 at a glance
| ZIP code | 61858 |
|---|---|
| Primary city | Oakwood |
| State | Illinois (IL) |
| County | Vermilion FIPS 17183 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,639 |
| Coordinates | 40.131660, -87.764380 |
How ZIP+4 works in 61858
The four digits after the hyphen encode a delivery segment inside 61858. 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 61858 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 61858.
| ZIP | City | Distance |
|---|---|---|
| 61857 | Muncie, IL | 4.3 mi |
| 61844 | Fithian, IL | 5.7 mi |
| 61833 | Tilton, IL | 6.6 mi |
| 61831 | Collison, IL | 6.7 mi |
| 61834 | Danville, IL | 6.9 mi |
| 61832 | Danville, IL | 7 mi |
| 61817 | Catlin, IL | 7.3 mi |
| 61841 | Fairmount, IL | 7.8 mi |
| 61883 | Westville, IL | 9.4 mi |
| 61859 | Ogden, IL | 10.5 mi |
| 61812 | Armstrong, IL | 11 mi |
| 61865 | Potomac, IL | 12 mi |
Questions about 61858
What is the ZIP+4 code for 61858?
61858 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 61858, you need to look up a specific street address to get them.
What city is 61858?
61858 is assigned to Oakwood, Illinois, in Vermilion 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.