ZIP Code 61739 — Fairbury, IL
61739 is a standard (street delivery) ZIP code serving Fairbury, Illinois, in Livingston 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 61739 at a glance
| ZIP code | 61739 |
|---|---|
| Primary city | Fairbury |
| State | Illinois (IL) |
| County | Livingston FIPS 17105 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 4,628 |
| Coordinates | 40.733420, -88.519380 |
How ZIP+4 works in 61739
The four digits after the hyphen encode a delivery segment inside 61739. 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 61739 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 61739.
| ZIP | City | Distance |
|---|---|---|
| 61741 | Forrest, IL | 6.5 mi |
| 61731 | Cropsey, IL | 8.5 mi |
| 61726 | Chenoa, IL | 9.5 mi |
| 61775 | Strawn, IL | 9.7 mi |
| 61764 | Pontiac, IL | 11.8 mi |
| 60921 | Chatsworth, IL | 12 mi |
| 61769 | Saunemin, IL | 12 mi |
| 61728 | Colfax, IL | 12.2 mi |
| 61720 | Anchor, IL | 12.5 mi |
| 61773 | Sibley, IL | 13.4 mi |
| 60929 | Cullom, IL | 15.4 mi |
| 61753 | Lexington, IL | 15.6 mi |
Questions about 61739
What is the ZIP+4 code for 61739?
61739 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 61739, you need to look up a specific street address to get them.
What city is 61739?
61739 is assigned to Fairbury, Illinois, in Livingston 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.