Founded on Feb 26, 1857, Humboldt County is one of 99 counties in the state of Iowa. Historically, Humboldt County was formed from Webster County. The city of Dakota City is the county seat. With FIPS code of 91, Humboldt County has a population of 9,634 and area of 434 square miles (1,124 km2).
List of all cities in Humboldt County, IA alphabetically
| City/Town | Postal Code | Area Code |
| Bode, IA | 50519 | 515 |
| Bradgate, IA | 50520 | 515 |
| Dakota City, IA | 50529 | 515 |
| Gilmore City, IA | 50541 | 515 |
| Hardy, IA | 50545 | 515 |
| Humboldt, IA | 50548 | 515 |
| Livermore, IA | 50558 | 515 |
| Ottosen, IA | 50570 | 515 |
| Pioneer, IA | 50541 | 515 |
| Renwick, IA | 50577 | 515 |
| Rutland, IA | 50582 | 515 |
| Saint Joseph, IA | 50519 | 515 |
| Thor, IA | 50591 | 515 |