The Mac’s Contacts app is incredibly useful for storing personal and work contact info. Here’s how to back up your Contacts database.
Contacts in macOSmacOS’s Contacts app lives in the /Applications folder at the root of your Startup Disk. When you add new Contacts, each page, or vCard is stored in a local database on disk at ~/Library/Application Support/AddressBook (the Contacts app was called “Address Book” in earlier versions of macOS).

