| ZIP Code | 51040 |
| City | Onawa |
| State | Iowa (IA) |
| County | Monona |
| Timezone | America/Chicago |
| Coordinates | 42.0307300, -96.0706000 |
| Population | 3,500 |
| ZIP Type | STANDARD |
| Country | United States |
ZIP code 51040 covers the community of Onawa in Iowa, the United States. This area falls under Monona County.
Around 3,500 people live in the 51040 ZIP code area. This is roughly in line with the Iowa average of about 3,313 residents.
Population density runs around 10 people per sq. mile, making it a rural area.
This ZIP code sits alongside neighboring areas like Ankeny, Cedar Falls, Dubuque within Iowa.
The ZIP code for Onawa, Iowa is 51040.
51040 is located in Monona County, Iowa.
The population of 51040 (Onawa) is approximately 3,500 people.
51040 is about average compared to the typical Iowa ZIP code, which averages around 3,313 people.
ZIP code codes near 51040 include 50023, 50613, 52001.