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> South Dakota > Lake Madison
| City : | Lake Madison |
| County : | Lake County |
| State : | South Dakota (SD) |
| Land Area : | 4.75 sq mi |
| Water Area : | 4.36 sq mi |
| Latitude : | 43.9595975 |
| Longitude : | -97.0308546 |
| Population (2010): | 683 |
| Population Estimate (2012) : | 529 |
| Population Density : | 143.83/sq mi |
| Housing Units (2012) : | 800 |
| Median Household Income (2012) : | $67,614 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $82,656 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $218,200 (South Dakota : $129,800, USA : $181,400) |