| Zip Code : | 52738 |
| City : | Columbus city, Columbus Junction city, Cotter city, Fredonia city |
| County : | Louisa County |
| State : | Iowa (IA) |
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| Land Area : | 122.83 sq mi |
| Water Area : | 1.96 sq mi |
| Latitude : | 41.2736628 |
| Longitude : | -91.3784788 |
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| Population (2010): | 3,567 |
| Population Estimate (2012) : | 3,713 |
| Population Density : | 29.04/sq mi |
| Housing Units (2012) : | 1,499 |
| Median Household Income (2012) : | $51,618 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $54,797 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $99,300 (Iowa : $123,000, USA : $181,400) |