Pretty much. I know that Massachusetts suburbs generally aren't any less Democratic than Boston itself (Cambridge and Brookline are even more Democratic, actually). Texas suburbs are generally Republican, though. It's the same story.
Cambridge and Brookline are cities in their own right: Cambridge's population is over 100,000 and Brookline's is over 50,000. I consider Boston's suburbs to be towns like Dedham, Weston, Wayland, etc. and any of the rt. 128 corridor towns, which are indeed very Democratic, if somewhat less so than Boston.
Would you say Waltham (Bentley College) is more or less Democratic than Boston proper is?
