ZIP Code 50590 — Swea City, IA
50590 is a standard (street delivery) ZIP code serving Swea City, Iowa, in Kossuth 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 50590 at a glance
| ZIP code | 50590 |
|---|---|
| Primary city | Swea City |
| State | Iowa (IA) |
| County | Kossuth FIPS 19109 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 718 |
| Coordinates | 43.406470, -94.303030 |
How ZIP+4 works in 50590
The four digits after the hyphen encode a delivery segment inside 50590. 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 50590 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 50590.
| ZIP | City | Distance |
|---|---|---|
| 50556 | Ledyard, IA | 6 mi |
| 50517 | Bancroft, IA | 8 mi |
| 50514 | Armstrong, IA | 8.6 mi |
| 50451 | Lakota, IA | 10.8 mi |
| 56027 | Elmore, MN | 11.9 mi |
| 50539 | Fenton, IA | 13.1 mi |
| 50559 | Lone Rock, IA | 13.7 mi |
| 50578 | Ringsted, IA | 14.3 mi |
| 50531 | Dolliver, IA | 16 mi |
| 50522 | Burt, IA | 16.3 mi |
| 50480 | Titonka, IA | 16.5 mi |
| 56031 | Fairmont, MN | 17 mi |
Questions about 50590
What is the ZIP+4 code for 50590?
50590 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 50590, you need to look up a specific street address to get them.
What city is 50590?
50590 is assigned to Swea City, Iowa, in Kossuth 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.