ZIP Code 61542 — Lewistown, IL
61542 is a standard (street delivery) ZIP code serving Lewistown, Illinois, in Fulton 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 61542 at a glance
| ZIP code | 61542 |
|---|---|
| Primary city | Lewistown |
| State | Illinois (IL) |
| County | Fulton FIPS 17057 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 3,280 |
| Coordinates | 40.384870, -90.134020 |
How ZIP+4 works in 61542
The four digits after the hyphen encode a delivery segment inside 61542. 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 61542 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 61542.
| ZIP | City | Distance |
|---|---|---|
| 61519 | Bryant, IL | 5.9 mi |
| 62644 | Havana, IL | 7.9 mi |
| 61427 | Cuba, IL | 8.4 mi |
| 61563 | Saint David, IL | 8.6 mi |
| 61441 | Ipava, IL | 8.9 mi |
| 61524 | Dunfermline, IL | 9 mi |
| 61543 | Liverpool, IL | 9.1 mi |
| 61433 | Fiatt, IL | 12 mi |
| 61477 | Smithfield, IL | 12.1 mi |
| 61520 | Canton, IL | 12.3 mi |
| 61567 | Topeka, IL | 12.6 mi |
| 61501 | Astoria, IL | 14.3 mi |
Questions about 61542
What is the ZIP+4 code for 61542?
61542 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 61542, you need to look up a specific street address to get them.
What city is 61542?
61542 is assigned to Lewistown, Illinois, in Fulton 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.