A unique three-part number that's assigned to each AdWords account, listed at the top of every page in your account.
- After you sign in to your account, your customer ID will be at the top of any AdWords page, just below your email address.
- Your customer ID is used to identify your AdWords account. You can use this number when contacting AdWords customer support and also to connect your account with other Google products like Google Analytics or Google Places.
- For client account managers, this number is called the Manager ID.