ZIP Code 50629 — Fairbank, IA
50629 is a standard (street delivery) ZIP code serving Fairbank, Iowa, in Buchanan 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 50629 at a glance
| ZIP code | 50629 |
|---|---|
| Primary city | Fairbank |
| State | Iowa (IA) |
| County | Buchanan FIPS 19019 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,082 |
| Coordinates | 42.642220, -92.081000 |
How ZIP+4 works in 50629
The four digits after the hyphen encode a delivery segment inside 50629. 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 50629 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 50629.
| ZIP | City | Distance |
|---|---|---|
| 50664 | Oran, IA | 4.5 mi |
| 50626 | Dunkerton, IA | 6.2 mi |
| 50668 | Readlyn, IA | 8.1 mi |
| 50662 | Oelwein, IA | 8.1 mi |
| 50641 | Hazleton, IA | 8.8 mi |
| 50681 | Westgate, IA | 10 mi |
| 50623 | Dewar, IA | 10.3 mi |
| 50703 | Waterloo, IA | 12.1 mi |
| 50655 | Maynard, IA | 12.8 mi |
| 50622 | Denver, IA | 13 mi |
| 50648 | Jesup, IA | 13.2 mi |
| 50674 | Sumner, IA | 13.9 mi |
Questions about 50629
What is the ZIP+4 code for 50629?
50629 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 50629, you need to look up a specific street address to get them.
What city is 50629?
50629 is assigned to Fairbank, Iowa, in Buchanan 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.