| County : | Fayette County |
| State : | Iowa (IA) |
| Land Area : | 730.81 sq mi |
| Water Area : | 0.52 sq mi |
| Latitude : | 42.8644496 |
| Longitude : | -91.8393728 |
| Population (2010): | 20,880 |
| Population Estimate (2012) : | 20,894 |
| Population Density : | 28.57/sq mi |
| Housing Units (2012) : | 9,558 |
| Median Household Income (2012) : | $42,995 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $55,425 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $82,800 (Iowa : $123,000, USA : $181,400) |
Fayette County Cities / Towns
| Arlington City (429) | Clermont City (632) | Elgin City (683) |
| Fairbank City (1,113) | Fayette City (1,338) | Hawkeye City (449) |
| Maynard City (518) | Oelwein City (6,415) | Randalia City (68) |
| St. Lucas City (143) | Stanley City (125) | Sumner City (2,028) |
| Wadena City (262) | Waucoma City (257) | Westgate City (211) |
| West Union City (2,486) |
Fayette County Zip Codes
| 50606 (885) | 50607 (481) | 50629 (2,418) |
| 50650 (737) | 50655 (873) | 50662 (7,238) |
| 50664 (53) | 50671 (269) | 50674 (3,555) |
| 50681 (457) | 52076 (2,295) | 52133 (558) |
| 52135 (864) | 52141 (1,435) | 52142 (1,871) |
| 52144 (1,261) | 52147 (1,050) | 52161 (1,505) |
| 52162 (3,285) | 52164 (212) | 52166 (104) |
| 52169 (432) | 52171 (1,048) | 52175 (3,492) |