demography
🇺🇸
/dɪˈmɑːɡrəfi/
🇬🇧
/dɪˈmɒɡrəfi/
The study of a population's size, growth, and characteristics, such as age, sex, and health.
Understanding the demography of a community helps in planning for their needs and services.
了解一个社区的人口统计特征有助于规划他们的需求和服务。