ZIP Code 50854 — Mount Ayr, IA
50854 is a standard (street delivery) ZIP code serving Mount Ayr, Iowa, in Ringgold 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 50854 at a glance
| ZIP code | 50854 |
|---|---|
| Primary city | Mount Ayr |
| State | Iowa (IA) |
| County | Ringgold FIPS 19159 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,391 |
| Coordinates | 40.690890, -94.219770 |
How ZIP+4 works in 50854
The four digits after the hyphen encode a delivery segment inside 50854. 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 50854 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 50854.
| ZIP | City | Distance |
|---|---|---|
| 50133 | Kellerton, IA | 7.7 mi |
| 50835 | Benton, IA | 7.8 mi |
| 50860 | Redding, IA | 8.3 mi |
| 50863 | Tingley, IA | 11 mi |
| 50845 | Diagonal, IA | 11.1 mi |
| 64458 | Hatfield, MO | 12.3 mi |
| 50140 | Lamoni, IA | 12.5 mi |
| 50074 | Ellston, IA | 13.7 mi |
| 64420 | Allendale, MO | 14.6 mi |
| 50836 | Blockton, IA | 15.1 mi |
| 50861 | Shannon City, IA | 15.4 mi |
| 50840 | Clearfield, IA | 15.5 mi |
Questions about 50854
What is the ZIP+4 code for 50854?
50854 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 50854, you need to look up a specific street address to get them.
What city is 50854?
50854 is assigned to Mount Ayr, Iowa, in Ringgold 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.