Age structure refers to the distribution of various age groups within a population. It is typically represented in a population pyramid, which visually displays the number of individuals in different age categories, such as children, working-age adults, and the elderly. Understanding age structure helps in analyzing demographic trends, resource allocation, and social services. The age structure of a population can influence economic growth and social stability. For instance, a younger population may indicate potential for a growing workforce, while an aging population may lead to increased healthcare needs and pension costs. Policymakers often use age structure data to plan for future challenges and opportunities.