THE ONAWA LAND BRIEF
Land in the
Missouri Alluvial Plain setting.
Onawa city has 5.27 square miles of land in Monona County. Its Census reference point is in Missouri Alluvial Plain, within Western Corn Belt Plains.
Glacial till plains and windblown loess hills make up the Western Corn Belt landscape. Near-level and rolling terrain are interspersed with steeper river valleys and hills.
Regional context: Western Corn Belt Plains ↗ · Classification at the Census reference point
Onawa and Monona County
Onawa is associated with Monona County in the Census boundary data. Start with the parcel’s tax bill to match the property to that jurisdiction, then confirm which government handles its land use.
Onawa by land and water
The Census records 0 square miles of water within Onawa, or 0% of its total area. It is 0.7 percentage points lower than the 0.7% recorded for Monona County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Onawa city has 58.5 times the land area of nearby Turin city (0.09 square miles). These areas describe boundaries, not comparable property prices.

