@Sue17 You have to Open Evernote Application. Then press & hold the Option key. While held down, you can then click on Help. See the screenshot that @DTLow posted. From there a Finder window will open up your database folder. From there you can right click on the database folder and Get Info to see how much space the Evernote database is taking up. I'm running into the same issue wherein I have a growing database and limited disk space. I tried uninstalling/deleting Evernote, but it will re-download everything once you re-install it again.