About three-quarters of adults in each group are under 50. And a third of U.S. Muslim adults are younger than 30. The country’s religiously unaffiliated population is relatively young as well. Roughly ...

Demographics can include any statistical factors that influence population growth or decline, but several parameters are particularly important: population size, density, age structure ...

Generational marketing, which defines consumers not just by age, but also by social, economic, demographic ... of the target consumer. A newer twist is cohort marketing, which studies groups ...