Located in Central Illinois, on North Route 45 in Mattoon, Illinois.   Local 347 has jurisdiction over the counties of Clark, Coles, Crawford, Cumberland, Douglas, Effingham, Jasper, Moultrie and Shelby.

Carpenters Local 347 is affiliated with The United Brotherhood of Carpenters and Joiners of America and also The Mid Central Illinois Regional Councial of Carpenters.  The Joint Apprentince and Training Committiee with a facility located in Pekin Illinois instructs apprentinces with the latest technologies with a "hand on" and classroom approach. Also it offers skill advancement classes for journeymen to keep up with the ever changing constuction industry.