ZIP Code 61571 — Washington, IL
61571 is a standard (street delivery) ZIP code serving Washington, Illinois, in Tazewell 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 61571 at a glance
| ZIP code | 61571 |
|---|---|
| Primary city | Washington |
| State | Illinois (IL) |
| County | Tazewell FIPS 17179 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 24,470 |
| Coordinates | 40.705060, -89.422940 |
How ZIP+4 works in 61571
The four digits after the hyphen encode a delivery segment inside 61571. 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 61571 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 61571.
| ZIP | City | Distance |
|---|---|---|
| 61611 | East Peoria, IL | 5.9 mi |
| 61550 | Morton, IL | 6.6 mi |
| 61548 | Metamora, IL | 7.2 mi |
| 61733 | Deer Creek, IL | 7.2 mi |
| 61603 | Peoria, IL | 8 mi |
| 61616 | Peoria Heights, IL | 8.3 mi |
| 61530 | Eureka, IL | 8.4 mi |
| 61742 | Goodfield, IL | 9.3 mi |
| 61602 | Peoria, IL | 9.6 mi |
| 61535 | Groveland, IL | 9.8 mi |
| 61606 | Peoria, IL | 9.9 mi |
| 61625 | Peoria, IL | 10 mi |
Questions about 61571
What is the ZIP+4 code for 61571?
61571 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 61571, you need to look up a specific street address to get them.
What city is 61571?
61571 is assigned to Washington, Illinois, in Tazewell 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.