India, Sept. 25 -- "Generation Z" has crossed a line that always mattered in American life. The oldest members are past 25, stepping into managerial seats and family formation, and the youngest are becoming high school freshmen. The country is relearning its own rhythms through them: work and money, attention and faith, language and identity. The vocabulary has changed, the expectations have shifted, and a familiar question is suddenly urgent again for executives, politicians, teachers, and parents. What years are Gen Z, what is their real age range in 2025, and what comes after Gen Z.

The simplest answer has never been the whole answer. Researchers and consultancies offer overlapping ranges that reflect different methods rather than dif...