ZIP Code 50257 — Truro, IA
50257 is a standard (street delivery) ZIP code serving Truro, Iowa, in Madison 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 50257 at a glance
| ZIP code | 50257 |
|---|---|
| Primary city | Truro |
| State | Iowa (IA) |
| County | Madison FIPS 19121 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 914 |
| Coordinates | 41.190920, -93.850480 |
How ZIP+4 works in 50257
The four digits after the hyphen encode a delivery segment inside 50257. 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 50257 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 50257.
| ZIP | City | Distance |
|---|---|---|
| 50222 | Peru, IA | 5.7 mi |
| 50240 | Saint Charles, IA | 7.6 mi |
| 50210 | New Virginia, IA | 7.9 mi |
| 50241 | Saint Marys, IA | 10.1 mi |
| 50218 | Patterson, IA | 11 mi |
| 50213 | Osceola, IA | 11.8 mi |
| 50174 | Murray, IA | 12.1 mi |
| 50033 | Bevington, IA | 12.1 mi |
| 50149 | Lorimor, IA | 12.3 mi |
| 50229 | Prole, IA | 13.2 mi |
| 50160 | Martensdale, IA | 13.9 mi |
| 50273 | Winterset, IA | 14.3 mi |
Questions about 50257
What is the ZIP+4 code for 50257?
50257 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 50257, you need to look up a specific street address to get them.
What city is 50257?
50257 is assigned to Truro, Iowa, in Madison 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.