ZIP Code 61740 — Flanagan, IL
61740 is a standard (street delivery) ZIP code serving Flanagan, 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 61740 at a glance
| ZIP code | 61740 |
|---|---|
| Primary city | Flanagan |
| State | Illinois (IL) |
| County | Livingston FIPS 17105 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,377 |
| Coordinates | 40.887790, -88.863970 |
How ZIP+4 works in 61740
The four digits after the hyphen encode a delivery segment inside 61740. 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 61740 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 61740.
| ZIP | City | Distance |
|---|---|---|
| 61743 | Graymont, IL | 4.4 mi |
| 61333 | Long Point, IL | 7.1 mi |
| 61321 | Dana, IL | 8 mi |
| 61760 | Minonk, IL | 8.8 mi |
| 61744 | Gridley, IL | 10 mi |
| 61311 | Ancona, IL | 10.5 mi |
| 61319 | Cornell, IL | 10.8 mi |
| 61358 | Rutland, IL | 11.4 mi |
| 61764 | Pontiac, IL | 12.4 mi |
| 61738 | El Paso, IL | 12.8 mi |
| 61726 | Chenoa, IL | 13.3 mi |
| 61516 | Benson, IL | 14.2 mi |
Questions about 61740
What is the ZIP+4 code for 61740?
61740 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 61740, you need to look up a specific street address to get them.
What city is 61740?
61740 is assigned to Flanagan, 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.