Would it be a good idea to state my age in a cover letter for a job that markets to a demographic I'm part of?

I am applying for a job that markets retreats to people in their 20s and 30s. I am 27. Would it be good to tell the organization to which I am applying that I am a member of their targeted age demographic? Would it be best to state that I am part of the demographic, tell them my exact age or just leave it out altogether?