How do I find my company id

Hello Wendy -newquay-h, 

Welcome to the Community page, 

So there is a few ways to find your company id number in Quickbooks, You can either 

 when logged on to your account if you click the cog wheel>account and settings>billing and subscription it will show you your company id number there for you. 

or 

 If you have a windows pc and logged into your account on the dashboard,  if you hold down ctrl alt ? all together it will pop it up

 If you have a apple pc and logged into your account on the dashboard, if you hold down ctrl opt ? all together it will pop it up.