ZIP Code 50644 — Independence, IA
50644 is a standard (street delivery) ZIP code serving Independence, 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 50644 at a glance
| ZIP code | 50644 |
|---|---|
| Primary city | Independence |
| State | Iowa (IA) |
| County | Buchanan FIPS 19019 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 8,419 |
| Coordinates | 42.477510, -91.897210 |
How ZIP+4 works in 50644
The four digits after the hyphen encode a delivery segment inside 50644. 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 50644 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 50644.
| ZIP | City | Distance |
|---|---|---|
| 50641 | Hazleton, IA | 8.4 mi |
| 52329 | Rowley, IA | 8.5 mi |
| 52326 | Quasqueton, IA | 9.1 mi |
| 50682 | Winthrop, IA | 10.2 mi |
| 50648 | Jesup, IA | 10.2 mi |
| 52210 | Brandon, IA | 11 mi |
| 50607 | Aurora, IA | 11.8 mi |
| 50671 | Stanley, IA | 13 mi |
| 52352 | Walker, IA | 14.5 mi |
| 50662 | Oelwein, IA | 14.6 mi |
| 50629 | Fairbank, IA | 14.7 mi |
| 50654 | Masonville, IA | 14.7 mi |
Questions about 50644
What is the ZIP+4 code for 50644?
50644 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 50644, you need to look up a specific street address to get them.
What city is 50644?
50644 is assigned to Independence, 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.