The area that Insulators Local 50 covers
Insulators Local 50 grew as a result of a 2005 merger between Local 44 in Columbus and Local 79 in Dayton, our jurisdiction extends from the eastern to western borders of the state of Ohio and two counties in Indiana.
Both of the below indicated zones host a maintained and up-to-date union hall and training center. Those locations are located in Columbus and Dayton.
Zone 1
| STATE OF OHIO Counties of: | ||||
| Athens | Crawford | Delaware | Fairfield | Fayette |
| Franklin | Guernsey | Hardin | Hocking | Knox |
| Licking | Madison | Marion | Morgan | Morrow |
| Muskingum | Noble | Perry | Pickaway | Ross |
| Union | Vinton | |||
Zone 2
| STATE OF OHIO Counties of: | ||||
| Auglaize | Champaign | Clark | Clinton | Darke |
| Greene | Logan | Miami | Montgomery | Preble |
| Shelby | ||||
| Townships of: Butler County-Townships of Lemon and Madison Warren County- Townships of Clear Creek, Franklin, Massie, Turtle Creek, and Wayne |
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| STATE OF INDIANA Counties of: | ||||
| Randolph | Wayne | |||
