| City : | Winthrop City |
| County : | Buchanan County |
| State : | Iowa (IA) |
| Land Area : | 0.84 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 42.4702443 |
| Longitude : | -91.7380256 |
| Population (2010): | 850 |
| Population Estimate (2012) : | 892 |
| Population Density : | 1,008.36/sq mi |
| Housing Units (2012) : | 357 |
| Median Household Income (2012) : | $56,250 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $66,750 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $104,500 (Iowa : $123,000, USA : $181,400) |