Founded on Jan 15, 1851, Montgomery County is one of 99 counties in the state of Iowa. Historically, Montgomery County was formed from Polk County. The city of Red Oak is the county seat. With FIPS code of 137, Montgomery County has a population of 10,322 and area of 424 square miles (1,098 km2).
List of all cities in Montgomery County, IA alphabetically
| City/Town | Postal Code | Area Code |
| Elliott, IA | 51532 | 712 |
| Grant, IA | 50847 | 712 |
| Morton Mills, IA | 50864 | 712 |
| Red Oak, IA | 51566 | 712 |
| Red Oak, IA | 51591 | 712 |
| Stanton, IA | 51573 | 712 |
| Tenville Junction, IA | 50864 | 712 |
| Villisca, IA | 50864 | 712 |