ZIP Code 60645 — Chicago, IL
60645 is a standard (street delivery) ZIP code serving Chicago, 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 60645 at a glance
| ZIP code | 60645 |
|---|---|
| Primary city | Chicago |
| State | Illinois (IL) |
| County | Cook FIPS 17031 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 48,208 |
| Coordinates | 42.008590, -87.694570 |
How ZIP+4 works in 60645
The four digits after the hyphen encode a delivery segment inside 60645. 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 60645 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.
Other ZIP codes in Chicago
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 60645.
| ZIP | City | Distance |
|---|---|---|
| 60626 | Chicago, IL | 1.3 mi |
| 60659 | Chicago, IL | 1.5 mi |
| 60202 | Evanston, IL | 1.5 mi |
| 60660 | Chicago, IL | 1.9 mi |
| 60712 | Lincolnwood, IL | 2 mi |
| 60076 | Skokie, IL | 2.5 mi |
| 60625 | Chicago, IL | 2.5 mi |
| 60640 | Chicago, IL | 2.9 mi |
| 60203 | Evanston, IL | 3 mi |
| 60201 | Evanston, IL | 3.3 mi |
| 60208 | Evanston, IL | 3.3 mi |
| 60646 | Chicago, IL | 3.6 mi |
Questions about 60645
What is the ZIP+4 code for 60645?
60645 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 60645, you need to look up a specific street address to get them.
What city is 60645?
60645 is assigned to Chicago, 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.