The paper analyzes changes in age structure of 42 settlements of Zaječar community from aspects of total amount of population, population size, sort, type and the hypsometric zone they belong to. Statistical analysis done on a two census years (1971. and 2002) shows the oldening of all the settlements, as well as dependence of changes in age structure of the sort of settlements, their population size and altitude. The age structure of villages, smaller settlements and those from higher hypsometric zones is worsening faster. The analysis doesn't show statistical connection between the age structure and the type of settlement.