Should I talk about service in my job application? I am a mathematician on the job market this year and am wondering if I should talk at all about service and other aspects of who I am other than my teaching and research. So for example, committees I've been on, leadership roles, professional development, etc. And if so, where would I put this information? My teaching statement? Cover letter? 

Let's assume that I'm applying to jobs that are more focused on teaching than research. Thanks!
Many (if not most) academic CVs have a section labeled "Service" that lists committee memberships, reviewing experience, outreach activities, and other university and community service.  You could also reasonably include a brief "service statement", as an addendum to your teaching (or research) statement, that explains those service activities (and future goals) in more detail.

But keep in mind that you're not describing who you are as a human being, but rather who you are as a potential colleague.  The service activities you describe should have direct bearing on your suitability for a teaching job in a university mathematics department.  So coaching your daughter's robotics team could reasonably be included, but coaching her baseball team probably shouldn't.

Also remember that your service activities are almost certainly less important than your record in teaching and research.  "Service" should be the last section of your CV, and any service statement should be significantly shorter than your teaching or research statements.