ZIP Code 61530 — Eureka, IL
61530 is a standard (street delivery) ZIP code serving Eureka, Illinois, in Woodford 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 61530 at a glance
| ZIP code | 61530 |
|---|---|
| Primary city | Eureka |
| State | Illinois (IL) |
| County | Woodford FIPS 17203 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 6,470 |
| Coordinates | 40.711460, -89.262870 |
How ZIP+4 works in 61530
The four digits after the hyphen encode a delivery segment inside 61530. 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 61530 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 61530.
| ZIP | City | Distance |
|---|---|---|
| 61742 | Goodfield, IL | 5.4 mi |
| 61729 | Congerville, IL | 6.1 mi |
| 61771 | Secor, IL | 6.3 mi |
| 61733 | Deer Creek, IL | 7.1 mi |
| 61561 | Roanoke, IL | 7.2 mi |
| 61571 | Washington, IL | 8.4 mi |
| 61548 | Metamora, IL | 10.3 mi |
| 61725 | Carlock, IL | 10.3 mi |
| 61550 | Morton, IL | 11.6 mi |
| 61545 | Lowpoint, IL | 11.8 mi |
| 61516 | Benson, IL | 12.1 mi |
| 61738 | El Paso, IL | 12.5 mi |
Questions about 61530
What is the ZIP+4 code for 61530?
61530 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 61530, you need to look up a specific street address to get them.
What city is 61530?
61530 is assigned to Eureka, Illinois, in Woodford 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.