How to add google analytics script to ColdFusion

Well, using GA is mainly  about setting up just a couple lines of html which call Javascript provided by Google. There's really nothing cf-specific about it.

That said, since you'd likely want the js to be on every page. Assuming you create traditional cfml apps and no particular framework, the easiest way to include any code on all pages is via the application.cfm or onrequestend.cfm (old school) or the onrequestendstart/onrequest/onrequestend methods of application.cfc (newer school).

If that may be enough for you to run with, great. If not, let us know where you may need more clarification.