| Business Name | Address | |
| Humboldt County Rural Electric | 1505 150th St Lu Verne, IA 50560 |
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| Detrick Electric | 22 River Oaks Humboldt, IA 50548 |
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| Humboldt County Rural Elec Co | 13th St S Humboldt, IA 50548 |
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| R & G Electric Inc | 2110 10th Ave N Humboldt, IA 50548 |
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| T & R Electric & Networking | 2050 Utah Ave Goldfield, IA 50542 |
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