We are looking into 4-H for my sons but information on what the local groups actually do is hard to come by....
Each county is pretty specific. In our county, the clubs are split up geographically by township, but then when a person chooses a specific project, such as shooting sports, workshops will be run for the project with participants from all the clubs.
Here is some contact info.: https://extension.purdue.edu/Hamilton/Pages/profile.aspx?strAlias=bohde