Founded on Jan 15, 1851, Shelby County is one of 99 counties in the state of Iowa. Historically, Shelby County was formed from Cass County. The city of Harlan is the county seat. With FIPS code of 165, Shelby County has a population of 11,770 and area of 591 square miles (1,531 km2).
List of all cities in Shelby County, IA alphabetically
| City/Town | Postal Code | Area Code |
| Defiance, IA | 51527 | 712 |
| Earling, IA | 51530 | 712 |
| Elk Horn, IA | 51531 | 712 |
| Harlan, IA | 51537 | 712 |
| 51593 | 712 | |
| Irwin, IA | 51446 | 712 |
| Kirkman, IA | 51447 | 712 |
| Panama, IA | 51562 | 712 |
| 51578 | 712 | |
| Portsmouth, IA | 51565 | 712 |
| Red Line, IA | 51447 | 712 |
| Tennant, IA | 51537 | 712 |
| Westphalia, IA | 51578 | 712 |