| County : | Dubuque County |
| State : | Iowa (IA) |
| Land Area : | 608.30 sq mi |
| Water Area : | 8.33 sq mi |
| Latitude : | 42.4634808 |
| Longitude : | -90.8787708 |
| Population (2010): | 93,653 |
| Population Estimate (2012) : | 93,776 |
| Population Density : | 153.96/sq mi |
| Housing Units (2012) : | 38,951 |
| Median Household Income (2012) : | $50,885 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $64,641 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $144,300 (Iowa : $123,000, USA : $181,400) |
Dubuque County Cities / Towns
| Asbury City (4,170) | Balltown City (68) | Bankston City (25) |
| Bernard City (112) | Cascade City (2,159) | Centralia City (134) |
| Dubuque City (57,637) | Durango City (22) | Dyersville City (4,058) |
| Epworth City (1,860) | Farley City (1,537) | Graf City (79) |
| Holy Cross City (374) | Luxemburg City (240) | New Vienna City (407) |
| Peosta City (1,377) | Rickardsville City (182) | Sageville City (122) |
| Sherrill City (177) | Worthington City (401) | Zwingle City (91) |
Dubuque County Zip Codes
| 52001 (43,173) | 52002 (14,559) | 52003 (13,436) |
| 52031 (5,120) | 52032 (1,456) | 52033 (3,202) |
| 52039 (1,158) | 52040 (5,526) | 52045 (2,589) |
| 52046 (2,127) | 52052 (3,136) | 52053 (1,163) |
| 52054 (940) | 52065 (1,130) | 52068 (3,924) |
| 52073 (1,414) | 52078 (914) | 52079 (782) |
| 52237 (1,522) |