ZIP Code 50436 — Forest City, IA
50436 is a standard (street delivery) ZIP code serving Forest City, Iowa, in Winnebago 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 50436 at a glance
| ZIP code | 50436 |
|---|---|
| Primary city | Forest City |
| State | Iowa (IA) |
| County | Winnebago FIPS 19189 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 5,771 |
| Coordinates | 43.262560, -93.662420 |
How ZIP+4 works in 50436
The four digits after the hyphen encode a delivery segment inside 50436. 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 50436 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 50436.
| ZIP | City | Distance |
|---|---|---|
| 50453 | Leland, IA | 7.2 mi |
| 50432 | Crystal Lake, IA | 7.3 mi |
| 50434 | Fertile, IA | 10.3 mi |
| 50438 | Garner, IA | 10.7 mi |
| 50478 | Thompson, IA | 11.5 mi |
| 50446 | Joice, IA | 11.7 mi |
| 50484 | Woden, IA | 12.6 mi |
| 50423 | Britt, IA | 12.9 mi |
| 50450 | Lake Mills, IA | 13 mi |
| 50482 | Ventura, IA | 13.2 mi |
| 50473 | Scarville, IA | 13.9 mi |
| 50444 | Hanlontown, IA | 14 mi |
Questions about 50436
What is the ZIP+4 code for 50436?
50436 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 50436, you need to look up a specific street address to get them.
What city is 50436?
50436 is assigned to Forest City, Iowa, in Winnebago 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.