| County : | Clinton County |
| State : | Iowa (IA) |
| Land Area : | 694.91 sq mi |
| Water Area : | 15.26 sq mi |
| Latitude : | 41.8980732 |
| Longitude : | -90.5342431 |
| Population (2010): | 49,116 |
| Population Estimate (2012) : | 49,074 |
| Population Density : | 70.68/sq mi |
| Housing Units (2012) : | 21,733 |
| Median Household Income (2012) : | $49,010 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $64,391 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $110,700 (Iowa : $123,000, USA : $181,400) |
Clinton County Cities / Towns
| Andover City (103) | Calamus City (439) | Camanche City (4,448) |
| Charlotte City (394) | Clinton City (26,885) | Delmar City (525) |
| De Witt City (5,322) | Goose Lake City (240) | Grand Mound City (642) |
| Lost Nation City (446) | Low Moor City (288) | Maquoketa City (6,141) |
| Toronto City (124) | Welton City (165) | Wheatland City (764) |
Clinton County Zip Codes
| 52037 (1,223) | 52060 (8,658) | 52064 (847) |
| 52069 (1,609) | 52070 (1,128) | 52207 (383) |
| 52254 (895) | 52323 (867) | 52701 (108) |
| 52727 (409) | 52729 (874) | 52730 (4,950) |
| 52731 (894) | 52732 (28,293) | 52742 (7,618) |
| 52750 (619) | 52751 (1,054) | 52757 (201) |
| 52774 (136) | 52777 (1,357) |