ZIP Code 60439 — Lemont, IL
60439 is a standard (street delivery) ZIP code serving Lemont, Illinois, in Cook 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 60439 at a glance
| ZIP code | 60439 |
|---|---|
| Primary city | Lemont |
| State | Illinois (IL) |
| County | Cook FIPS 17031 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 24,192 |
| Coordinates | 41.676920, -87.976230 |
How ZIP+4 works in 60439
The four digits after the hyphen encode a delivery segment inside 60439. 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 60439 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 60439.
| ZIP | City | Distance |
|---|---|---|
| 60561 | Darien, IL | 4.7 mi |
| 60527 | Willowbrook, IL | 5.2 mi |
| 60491 | Homer Glen, IL | 5.2 mi |
| 60440 | Bolingbrook, IL | 5.4 mi |
| 60517 | Woodridge, IL | 5.5 mi |
| 60464 | Palos Park, IL | 5.6 mi |
| 60480 | Willow Springs, IL | 5.9 mi |
| 60516 | Downers Grove, IL | 6.3 mi |
| 60467 | Orland Park, IL | 7 mi |
| 60441 | Lockport, IL | 7 mi |
| 60446 | Romeoville, IL | 7 mi |
| 60465 | Palos Hills, IL | 7.9 mi |
Questions about 60439
What is the ZIP+4 code for 60439?
60439 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 60439, you need to look up a specific street address to get them.
What city is 60439?
60439 is assigned to Lemont, Illinois, in Cook 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.