Founded on Dec 21, 1837, Fayette County is one of 99 counties in the state of Iowa. Historically, Fayette County was formed from Clayton County and Wisconsin Territory. The city of West Union is the county seat. With FIPS code of 65, Fayette County has a population of 19,258 and area of 731 square miles (1,893 km2).
List of all cities in Fayette County, IA alphabetically
| City/Town | Postal Code | Area Code |
| Albany, IA | 52142 | 563 |
| Alpha, IA | 52171 | 563 |
| Arlington, IA | 50606 | 563 |
| Brainard, IA | 52141 | 563 |
| Clermont, IA | 52135 | 563 |
| Donnan, IA | 52142 | 563 |
| Douglas, IA | 52175 | 563 |
| Eldorado, IA | 52175 | 563 |
| Elgin, IA | 52141 | 563 |
| Fayette, IA | 52142 | 563 |
| Hawkeye, IA | 52147 | 563 |
| Jackson Jct, IA | 52171 | 563 |
| Jackson Junction, IA | 52171 | 563 |
| Lima, IA | 52142 | 563 |
| Maryville, IA | 50606 | 563 |
| Maynard, IA | 50655 | 563 |
| Oelwein, IA | 50662 | 319 |
| Oran, IA | 50664 | 319 |
| Randalia, IA | 52164 | 563 |
| Saint Lucas, IA | 52166 | 563 |
| Wadena, IA | 52169 | 563 |
| Waucoma, IA | 52171 | 563 |
| West Union, IA | 52175 | 563 |
| Westgate, IA | 50681 | 563 |