Doing 60 for the First Time As baby boomers turn 60, geodemographics firm MapInfo sheds light on mobility and behavior trends of note to builders. For 76 million people born between 1946 and 1964, which “active adult” models will attract boomers? Options range from age-restricted, Sun Belt-based, golf and hiking-trail leisure meccas, to urban move-down culture centers, to university and health care complex blends. Somehow, grandchildren are the big priority. Here's what we know so far.