| Zip Code : | 52563 |
| City : | Hedrick city, Martinsburg city |
| County : | Wapello County, Jefferson County, Keokuk County |
| State : | Iowa (IA) |
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| Land Area : | 115.46 sq mi |
| Water Area : | 0.04 sq mi |
| Latitude : | 41.1695127 |
| Longitude : | -92.2793071 |
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| Population (2010): | 1,583 |
| Population Estimate (2012) : | 1,760 |
| Population Density : | 13.71/sq mi |
| Housing Units (2012) : | 733 |
| Median Household Income (2012) : | $36,410 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $55,987 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $79,700 (Iowa : $123,000, USA : $181,400) |