ZIP Code 50621 — Conrad, IA
50621 is a standard (street delivery) ZIP code serving Conrad, Iowa, in Grundy 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 50621 at a glance
| ZIP code | 50621 |
|---|---|
| Primary city | Conrad |
| State | Iowa (IA) |
| County | Grundy FIPS 19075 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,601 |
| Coordinates | 42.247380, -92.919040 |
How ZIP+4 works in 50621
The four digits after the hyphen encode a delivery segment inside 50621. 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 50621 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 50621.
| ZIP | City | Distance |
|---|---|---|
| 50269 | Whitten, IA | 4.8 mi |
| 50609 | Beaman, IA | 5.7 mi |
| 50148 | Liscomb, IA | 6 mi |
| 50258 | Union, IA | 8.2 mi |
| 50638 | Grundy Center, IA | 9.8 mi |
| 50005 | Albion, IA | 9.8 mi |
| 50627 | Eldora, IA | 11.4 mi |
| 50652 | Lincoln, IA | 11.6 mi |
| 50635 | Gladbrook, IA | 11.7 mi |
| 50051 | Clemons, IA | 13.4 mi |
| 50158 | Marshalltown, IA | 13.6 mi |
| 50206 | New Providence, IA | 13.8 mi |
Questions about 50621
What is the ZIP+4 code for 50621?
50621 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 50621, you need to look up a specific street address to get them.
What city is 50621?
50621 is assigned to Conrad, Iowa, in Grundy 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.