| Business | Phone |
| A Electric 16 N Illinois Ave, Mason City 50401 | (641) 423-4883 |
| Blazek Electric Inc 115 8th St Se, Mason City 50401 | (641) 423-6686 |
| Electrician 612 12th St Ne, Mason City 50401 | (641) 423-7000 |
| Galindo Electric 525 S Carolina Ave, Mason City 50401 | (641) 423-1434 |
| H C Determan Electric Co 320 1st St Sw, Mason City 50401 | (641) 423-9425 |
| J & T Electric 1469 7th St Se, Mason City 50401 | (641) 424-5660 |
| Kehm Electric 302 2nd St Sw, Mason City 50401 | (641) 423-8200 |
| Kuppinger Electric Co 14801 Spruce Ave, Mason City 50401 | (641) 423-8848 |
| Linahon Electric Inc 1055 15th St Sw, Mason City 50401 | (641) 423-5528 |
| Mix Electric 70 35th St Se, Mason City 50401 | (641) 424-2118 |
| Reliance Electric Inc 118 S Rhode Island Ave, Mason City 50401 | (641) 423-8956 |
| Thomas Electric Co 3219 S Birch Dr, Mason City 50401 | (641) 424-3345 |
| Moorehead Electric 955 S Rhode Island Ave, Mason City 50401 | (641) 424-5878 |
| Vthe Electricians 612 12th St Ne, Mason City 50401 | (641) 998-2888 |