ZIP Code 50158 — Marshalltown, IA
50158 is a standard (street delivery) ZIP code serving Marshalltown, Iowa, in Marshall 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 50158 at a glance
| ZIP code | 50158 |
|---|---|
| Primary city | Marshalltown |
| State | Iowa (IA) |
| County | Marshall FIPS 19127 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 31,396 |
| Coordinates | 42.050160, -92.901430 |
How ZIP+4 works in 50158
The four digits after the hyphen encode a delivery segment inside 50158. 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 50158 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 50158.
| ZIP | City | Distance |
|---|---|---|
| 50142 | Le Grand, IA | 7.1 mi |
| 50078 | Ferguson, IA | 7.9 mi |
| 50005 | Albion, IA | 8.4 mi |
| 50120 | Haverhill, IA | 9.1 mi |
| 50632 | Garwin, IA | 10.3 mi |
| 50148 | Liscomb, IA | 10.3 mi |
| 50173 | Montour, IA | 11.1 mi |
| 50162 | Melbourne, IA | 12.1 mi |
| 50106 | Gilman, IA | 12.6 mi |
| 50141 | Laurel, IA | 12.8 mi |
| 50609 | Beaman, IA | 13.3 mi |
| 50051 | Clemons, IA | 13.5 mi |
Questions about 50158
What is the ZIP+4 code for 50158?
50158 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 50158, you need to look up a specific street address to get them.
What city is 50158?
50158 is assigned to Marshalltown, Iowa, in Marshall 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.