ZIP Code 61943 — Oakland, IL
61943 is a standard (street delivery) ZIP code serving Oakland, Illinois, in Coles 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 61943 at a glance
| ZIP code | 61943 |
|---|---|
| Primary city | Oakland |
| State | Illinois (IL) |
| County | Coles FIPS 17029 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,396 |
| Coordinates | 39.660800, -88.024800 |
How ZIP+4 works in 61943
The four digits after the hyphen encode a delivery segment inside 61943. 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 61943 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 61943.
| ZIP | City | Distance |
|---|---|---|
| 61930 | Hindsboro, IL | 5.7 mi |
| 61917 | Brocton, IL | 8 mi |
| 61949 | Redmon, IL | 8.8 mi |
| 61912 | Ashmore, IL | 9.2 mi |
| 61933 | Kansas, IL | 9.6 mi |
| 61919 | Camargo, IL | 10.1 mi |
| 61941 | Murdock, IL | 10.3 mi |
| 61942 | Newman, IL | 10.7 mi |
| 61932 | Hume, IL | 12.5 mi |
| 61920 | Charleston, IL | 13.1 mi |
| 61956 | Villa Grove, IL | 14.7 mi |
| 61910 | Arcola, IL | 14.7 mi |
Questions about 61943
What is the ZIP+4 code for 61943?
61943 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 61943, you need to look up a specific street address to get them.
What city is 61943?
61943 is assigned to Oakland, Illinois, in Coles 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.