| City : | Williamson City |
| County : | Lucas County |
| State : | Iowa (IA) |
| Land Area : | 0.32 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 41.0882414 |
| Longitude : | -93.2568821 |
| Population (2010): | 152 |
| Population Estimate (2012) : | 133 |
| Population Density : | 472.89/sq mi |
| Housing Units (2012) : | 82 |
| Median Household Income (2012) : | $46,250 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $60,833 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $28,800 (Iowa : $123,000, USA : $181,400) |