ZIP Code 60827 — Riverdale, IL
60827 is a standard (street delivery) ZIP code serving Riverdale, 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 60827 at a glance
| ZIP code | 60827 |
|---|---|
| Primary city | Riverdale |
| State | Illinois (IL) |
| County | Cook FIPS 17031 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 24,713 |
| Coordinates | 41.649670, -87.630130 |
How ZIP+4 works in 60827
The four digits after the hyphen encode a delivery segment inside 60827. 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 60827 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 60827.
| ZIP | City | Distance |
|---|---|---|
| 60419 | Dolton, IL | 2.2 mi |
| 60406 | Blue Island, IL | 2.7 mi |
| 60426 | Harvey, IL | 3 mi |
| 60628 | Chicago, IL | 3 mi |
| 60469 | Posen, IL | 3.2 mi |
| 60633 | Chicago, IL | 3.7 mi |
| 60643 | Chicago, IL | 3.9 mi |
| 60473 | South Holland, IL | 3.9 mi |
| 60472 | Robbins, IL | 4.1 mi |
| 60428 | Markham, IL | 4.6 mi |
| 60409 | Calumet City, IL | 4.8 mi |
| 60655 | Chicago, IL | 4.9 mi |
Questions about 60827
What is the ZIP+4 code for 60827?
60827 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 60827, you need to look up a specific street address to get them.
What city is 60827?
60827 is assigned to Riverdale, 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.