Hey, Janet, its been a long time. 

Here is the information from my cheat sheet.

Mac Most versions

Insert_user_name/Library/Application Support/MobileSync/Backup/

Windows 7 and Vista

C:\Users\insert_user_name\AppData\Roaming\Apple Computer\MobileSync\Backup\

Windows 8 and 10

\Users\insert_user_name\AppData\Roaming\Apple Computer\MobileSync\Backup

Windows XP

C:\Documents and Settings\insert_user_name\Application Data\Apple Computer\MobileSync\Backup

Please let me know if you need anything else.  Take care - Dave