| Zip Code : | 51301 |
| City : | Fostoria city, Spencer city |
| County : | Clay County |
| State : | Iowa (IA) |
| | |
| Land Area : | 156.26 sq mi |
| Water Area : | 0.86 sq mi |
| Latitude : | 43.1531703 |
| Longitude : | -95.1476544 |
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| Population (2010): | 12,691 |
| Population Estimate (2012) : | 12,867 |
| Population Density : | 81.22/sq mi |
| Housing Units (2012) : | 6,098 |
| Median Household Income (2012) : | $46,669 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $62,994 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $108,800 (Iowa : $123,000, USA : $181,400) |