ZIP Code 62521 — Decatur, IL
62521 is a standard (street delivery) ZIP code serving Decatur, Illinois, in Macon 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 62521 at a glance
| ZIP code | 62521 |
|---|---|
| Primary city | Decatur |
| State | Illinois (IL) |
| County | Macon FIPS 17115 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 32,665 |
| Coordinates | 39.814350, -88.930860 |
How ZIP+4 works in 62521
The four digits after the hyphen encode a delivery segment inside 62521. 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 62521 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 Decatur
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 62521.
| ZIP | City | Distance |
|---|---|---|
| 62523 | Decatur, IL | 2.3 mi |
| 62532 | Elwin, IL | 3.6 mi |
| 62549 | Mt Zion, IL | 4.6 mi |
| 62522 | Decatur, IL | 6.3 mi |
| 62514 | Boody, IL | 6.9 mi |
| 62526 | Decatur, IL | 6.9 mi |
| 62544 | Macon, IL | 7.6 mi |
| 62535 | Forsyth, IL | 7.9 mi |
| 61925 | Dalton City, IL | 8 mi |
| 62537 | Harristown, IL | 9 mi |
| 62554 | Oreana, IL | 9.9 mi |
| 62501 | Argenta, IL | 10.4 mi |
Questions about 62521
What is the ZIP+4 code for 62521?
62521 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 62521, you need to look up a specific street address to get them.
What city is 62521?
62521 is assigned to Decatur, Illinois, in Macon 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.