ZIP Code 50056 — Colo, IA
50056 is a standard (street delivery) ZIP code serving Colo, Iowa, in Story 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 50056 at a glance
| ZIP code | 50056 |
|---|---|
| Primary city | Colo |
| State | Iowa (IA) |
| County | Story FIPS 19169 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,003 |
| Coordinates | 42.019250, -93.297010 |
How ZIP+4 works in 50056
The four digits after the hyphen encode a delivery segment inside 50056. 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 50056 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 50056.
| ZIP | City | Distance |
|---|---|---|
| 50247 | State Center, IA | 6.7 mi |
| 50201 | Nevada, IA | 7.6 mi |
| 50278 | Zearing, IA | 9.2 mi |
| 50055 | Collins, IA | 9.3 mi |
| 50239 | Saint Anthony, IA | 9.9 mi |
| 50234 | Rhodes, IA | 10.7 mi |
| 50051 | Clemons, IA | 11.6 mi |
| 50154 | Mccallsburg, IA | 11.8 mi |
| 50161 | Maxwell, IA | 12.9 mi |
| 50162 | Melbourne, IA | 13.4 mi |
| 50236 | Roland, IA | 14 mi |
| 50046 | Cambridge, IA | 14.6 mi |
Questions about 50056
What is the ZIP+4 code for 50056?
50056 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 50056, you need to look up a specific street address to get them.
What city is 50056?
50056 is assigned to Colo, Iowa, in Story 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.