age-group

This term is primarily used in technical, sociological, or statistical contexts to categorize populations for data analysis. It carries a neutral, clinical tone and is common in demographics, marketing research, and medical studies to ensure that comparisons are made between comparable cohorts.

While similar to "age bracket," "age-group" is more frequently used in formal reporting and academic papers. It refers to the collective set of people within the range rather than just the boundaries of the range itself.