ZIP Code 61755 — Mackinaw, IL
61755 is a standard (street delivery) ZIP code serving Mackinaw, Illinois, in Tazewell 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 61755 at a glance
| ZIP code | 61755 |
|---|---|
| Primary city | Mackinaw |
| State | Illinois (IL) |
| County | Tazewell FIPS 17179 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 4,364 |
| Coordinates | 40.526610, -89.339090 |
How ZIP+4 works in 61755
The four digits after the hyphen encode a delivery segment inside 61755. 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 61755 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 61755.
| ZIP | City | Distance |
|---|---|---|
| 61759 | Minier, IL | 6.4 mi |
| 61733 | Deer Creek, IL | 6.7 mi |
| 61732 | Danvers, IL | 7 mi |
| 61568 | Tremont, IL | 7.5 mi |
| 61550 | Morton, IL | 7.9 mi |
| 61742 | Goodfield, IL | 8.1 mi |
| 61747 | Hopedale, IL | 9 mi |
| 61729 | Congerville, IL | 9.2 mi |
| 61774 | Stanford, IL | 9.9 mi |
| 61535 | Groveland, IL | 10.5 mi |
| 61721 | Armington, IL | 12 mi |
| 61725 | Carlock, IL | 13 mi |
Questions about 61755
What is the ZIP+4 code for 61755?
61755 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 61755, you need to look up a specific street address to get them.
What city is 61755?
61755 is assigned to Mackinaw, Illinois, in Tazewell 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.