ZIP Code 50112 — Grinnell, IA
50112 is a standard (street delivery) ZIP code serving Grinnell, Iowa, in Poweshiek 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 50112 at a glance
| ZIP code | 50112 |
|---|---|
| Primary city | Grinnell |
| State | Iowa (IA) |
| County | Poweshiek FIPS 19157 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 11,862 |
| Coordinates | 41.731900, -92.715910 |
How ZIP+4 works in 50112
The four digits after the hyphen encode a delivery segment inside 50112. 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 50112 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 50112.
| ZIP | City | Distance |
|---|---|---|
| 50157 | Malcom, IA | 8 mi |
| 50135 | Kellogg, IA | 9.1 mi |
| 50106 | Gilman, IA | 11.4 mi |
| 50153 | Lynnville, IA | 11.6 mi |
| 50242 | Searsboro, IA | 11.7 mi |
| 50137 | Killduff, IA | 13.6 mi |
| 52211 | Brooklyn, IA | 13.8 mi |
| 50251 | Sully, IA | 13.8 mi |
| 50171 | Montezuma, IA | 14.1 mi |
| 52339 | Tama, IA | 14.9 mi |
| 50141 | Laurel, IA | 15.6 mi |
| 50078 | Ferguson, IA | 16.1 mi |
Questions about 50112
What is the ZIP+4 code for 50112?
50112 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 50112, you need to look up a specific street address to get them.
What city is 50112?
50112 is assigned to Grinnell, Iowa, in Poweshiek 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.