demographic

(adj) Relating to the structure of populations. (n) A particular sector of a population, especially as a target market.

• demographics/ˌdɛməˈɡræfɪks/(n)人口统计数据
• demography/dɪˈmɒɡrəfi/(n)人口学

• demographic shift
• target demographic
• demographic data
• demographic trends
• key demographic

1. 1.The ageing demographic in Japan poses major challenges for the pension system. (population structure)
2. 2.The streaming service tailored its content to capture the 18-to-34 demographic. (target audience)

• population segment (descriptive)
• target audience (marketing context)

from Greek "demos" (people) + "graphein" (to write) — writing/describing populations