ZIP Code 62021 — Dorsey, IL
62021 is a standard (street delivery) ZIP code serving Dorsey, Illinois, in Madison 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 62021 at a glance
| ZIP code | 62021 |
|---|---|
| Primary city | Dorsey |
| State | Illinois (IL) |
| County | Madison FIPS 17119 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 871 |
| Coordinates | 38.977970, -89.981000 |
How ZIP+4 works in 62021
The four digits after the hyphen encode a delivery segment inside 62021. 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 62021 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 62021.
| ZIP | City | Distance |
|---|---|---|
| 62067 | Moro, IL | 3.4 mi |
| 62014 | Bunker Hill, IL | 4.8 mi |
| 62010 | Bethalto, IL | 5.4 mi |
| 62097 | Worden, IL | 7.3 mi |
| 62018 | Cottage Hills, IL | 7.4 mi |
| 62002 | Alton, IL | 8.3 mi |
| 62024 | East Alton, IL | 8.7 mi |
| 62095 | Wood River, IL | 9.4 mi |
| 62093 | Wilsonville, IL | 9.6 mi |
| 62046 | Hamel, IL | 9.6 mi |
| 62088 | Staunton, IL | 10.1 mi |
| 62012 | Brighton, IL | 10.1 mi |
Questions about 62021
What is the ZIP+4 code for 62021?
62021 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 62021, you need to look up a specific street address to get them.
What city is 62021?
62021 is assigned to Dorsey, Illinois, in Madison 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.