ZIP Code 60420 — Dwight, IL
60420 is a standard (street delivery) ZIP code serving Dwight, Illinois, in Livingston 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 60420 at a glance
| ZIP code | 60420 |
|---|---|
| Primary city | Dwight |
| State | Illinois (IL) |
| County | Livingston FIPS 17105 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 4,682 |
| Coordinates | 41.087950, -88.421270 |
How ZIP+4 works in 60420
The four digits after the hyphen encode a delivery segment inside 60420. 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 60420 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 60420.
| ZIP | City | Distance |
|---|---|---|
| 60424 | Gardner, IL | 7.2 mi |
| 60920 | Campus, IL | 7.3 mi |
| 60437 | Kinsman, IL | 8.4 mi |
| 60460 | Odell, IL | 8.5 mi |
| 60934 | Emington, IL | 9.5 mi |
| 60961 | Reddick, IL | 10 mi |
| 60474 | South Wilmington, IL | 10 mi |
| 60444 | Mazon, IL | 10.7 mi |
| 60479 | Verona, IL | 11.2 mi |
| 60919 | Cabery, IL | 11.7 mi |
| 60917 | Buckingham, IL | 12.3 mi |
| 60470 | Ransom, IL | 12.5 mi |
Questions about 60420
What is the ZIP+4 code for 60420?
60420 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 60420, you need to look up a specific street address to get them.
What city is 60420?
60420 is assigned to Dwight, Illinois, in Livingston 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.