ZIP Code 50166 — Milo, IA
50166 is a standard (street delivery) ZIP code serving Milo, Iowa, in Warren 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 50166 at a glance
| ZIP code | 50166 |
|---|---|
| Primary city | Milo |
| State | Iowa (IA) |
| County | Warren FIPS 19181 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,023 |
| Coordinates | 41.282890, -93.426290 |
How ZIP+4 works in 50166
The four digits after the hyphen encode a delivery segment inside 50166. 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 50166 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 50166.
| ZIP | City | Distance |
|---|---|---|
| 50001 | Ackworth, IA | 5.4 mi |
| 50145 | Liberty Center, IA | 6.2 mi |
| 50139 | Lacona, IA | 7 mi |
| 50125 | Indianola, IA | 8.7 mi |
| 50062 | Melcher Dallas, IA | 10 mi |
| 50163 | Melcher Dallas, IA | 10.5 mi |
| 50225 | Pleasantville, IA | 10.6 mi |
| 50118 | Hartford, IA | 12.5 mi |
| 50047 | Carlisle, IA | 13.4 mi |
| 50252 | Swan, IA | 13.4 mi |
| 50151 | Lucas, IA | 14.4 mi |
| 50210 | New Virginia, IA | 15.5 mi |
Questions about 50166
What is the ZIP+4 code for 50166?
50166 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 50166, you need to look up a specific street address to get them.
What city is 50166?
50166 is assigned to Milo, Iowa, in Warren 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.