Windows command-line command to list hidden folders

command linewindows

Is there a command on the Windows command-line that can list hidden folders?

I've tried dir -a:dh but that doesn't work for me.

dir /a:hd C:\folder\

The difference between what you were typing and this command is that you were using a - to indicate the switch, not a /. In most windows command line applications, this doesn't matter, but in the case of the dir command, you must use a slash, not a dash.
The /a switch changes which attributes are displayed. h shows hidden files and d shows just directories. Make sure you keep the trailing slash on the end of the folder path. I just tested, and it worked fine.