ZIP Code 50078 — Ferguson, IA
50078 is a standard (street delivery) ZIP code serving Ferguson, 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 50078 at a glance
| ZIP code | 50078 |
|---|---|
| Primary city | Ferguson |
| State | Iowa (IA) |
| County | Marshall FIPS 19127 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 85 |
| Coordinates | 41.938620, -92.862900 |
How ZIP+4 works in 50078
The four digits after the hyphen encode a delivery segment inside 50078. 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 50078 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 50078.
| ZIP | City | Distance |
|---|---|---|
| 50106 | Gilman, IA | 4.8 mi |
| 50120 | Haverhill, IA | 6.2 mi |
| 50142 | Le Grand, IA | 6.4 mi |
| 50141 | Laurel, IA | 6.8 mi |
| 50158 | Marshalltown, IA | 7.9 mi |
| 50173 | Montour, IA | 8.2 mi |
| 50162 | Melbourne, IA | 10.6 mi |
| 50632 | Garwin, IA | 12.6 mi |
| 50135 | Kellogg, IA | 13.3 mi |
| 52339 | Tama, IA | 14.4 mi |
| 50005 | Albion, IA | 15.6 mi |
| 50112 | Grinnell, IA | 16.1 mi |
Questions about 50078
What is the ZIP+4 code for 50078?
50078 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 50078, you need to look up a specific street address to get them.
What city is 50078?
50078 is assigned to Ferguson, 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.