Is there a way to copy Google Drive folders and all the contents within?

Currently you can only copy individual files or groups of files. You cannot copy or duplicate folders in Google Drive.

A workaround is:

1. Create one folder (the main folder) with all of the sub-folders and files you want.
2. Download the entire main folder (instructions for downloading). It will save as a zipped folder on your computer.
3. Extract the zipped folder. 
4. Rename the main folder to the name you want to give the copy.
5. Upload the renamed folder to your Google Drive (instructions for uploading).
   • Note: Sheets/Slides/Docs downloaded from Google Drive will convert to Microsoft files. Once uploaded, they will be stored originally as Microsoft files, but you can open them with the relevant Google App.

If you want to keep all of the files as the original Sheets/Slides/Docs, instead create just the folder structure and follow the download/upload instructions above. Then create all the files you want in one of the main folders, copy them as a batch, and move them as a batch into the next main folder. If you want files in sub-folders, you have to move them in batches from the main folder into the sub-folders for each folder copy.