ZIP Code 50831 — Arispe, IA
50831 is a standard (street delivery) ZIP code serving Arispe, Iowa, in Union 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 50831 at a glance
| ZIP code | 50831 |
|---|---|
| Primary city | Arispe |
| State | Iowa (IA) |
| County | Union FIPS 19175 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 22 |
| Coordinates | 40.949380, -94.223410 |
How ZIP+4 works in 50831
The four digits after the hyphen encode a delivery segment inside 50831. 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 50831 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 50831.
| ZIP | City | Distance |
|---|---|---|
| 50861 | Shannon City, IA | 3.1 mi |
| 50830 | Afton, IA | 5.4 mi |
| 50863 | Tingley, IA | 7.5 mi |
| 50254 | Thayer, IA | 8.5 mi |
| 50074 | Ellston, IA | 10 mi |
| 50845 | Diagonal, IA | 11.3 mi |
| 50801 | Creston, IA | 12.6 mi |
| 50842 | Cromwell, IA | 13.9 mi |
| 50174 | Murray, IA | 14.9 mi |
| 50149 | Lorimor, IA | 15.8 mi |
| 50108 | Grand River, IA | 16.3 mi |
| 50851 | Lenox, IA | 16.6 mi |
Questions about 50831
What is the ZIP+4 code for 50831?
50831 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 50831, you need to look up a specific street address to get them.
What city is 50831?
50831 is assigned to Arispe, Iowa, in Union 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.