| County : | Sioux County |
| State : | Iowa (IA) |
| Land Area : | 768.33 sq mi |
| Water Area : | 0.66 sq mi |
| Latitude : | 43.0828542 |
| Longitude : | -96.1779289 |
| Population (2010): | 33,704 |
| Population Estimate (2012) : | 33,776 |
| Population Density : | 43.87/sq mi |
| Housing Units (2012) : | 12,279 |
| Median Household Income (2012) : | $55,252 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $64,922 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $129,400 (Iowa : $123,000, USA : $181,400) |
Sioux County Cities / Towns
| Alton City (1,216) | Boyden City (707) | Chatsworth City (79) |
| Granville City (312) | Hawarden City (2,546) | Hospers City (698) |
| Hull City (2,175) | Ireton City (609) | Matlock City (87) |
| Maurice City (275) | Orange City (6,004) | Rock Valley City (3,354) |
| Sheldon City (5,188) | Sioux Center City (7,048) |
Sioux County Zip Codes
| 51003 (1,700) | 51011 (79) | 51022 (789) |
| 51023 (3,216) | 51027 (1,260) | 51036 (726) |
| 51041 (6,976) | 51201 (6,193) | 51234 (1,268) |
| 51235 (1,079) | 51238 (1,184) | 51239 (3,123) |
| 51240 (1,746) | 51244 (79) | 51247 (4,870) |
| 51250 (8,249) |