ZIP code 51040 of Onawa, Iowa: location on the map and coordinates.

The ZIP code 51040 belongs to Onawa, Iowa. This code is located in Monona County. On the following Open Street Map you can see the exact location of 51040 ZIP code. Zoom in or out to see the surrounding cities and areas, use the buttons shown on the map. Drag the map with your mouse or finger.
Exact coordinates of ZIP 51040: Latitude: 42.037 South, Longitude: 96.1072 West.

© 2026 City maps and famous places