---
title: "Ageing Definition in Population Dynamics | Model Diplomat"
description: "Ageing is the increase of elderly persons (60+) in a population due to lower fertility and higher life expectancy, impacting society and policy."
url: "https://modeldiplomat.com/learn/glossary/ageing"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- Ageing refers to the rising share and absolute number of elderly persons (conventionally aged 60 and above) in a population, driven by falling fertility and increasing life expectancy.
- How is a 'senior citizen' legally defined in India?
- What is the 'feminisation of ageing'?
- Why does ageing pose a challenge to the demographic dividend?
- Which schemes address the welfare of the elderly in India?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

Ageing refers to the rising share and absolute number of elderly persons (conventionally aged 60 and above) in a population, driven by falling fertility and increasing life expectancy.

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In 2023 the UNFPA India Ageing Report projected India's 60-plus population would rise from 10.5% in 2022 to 20.8% by 2050, with Kerala already ageing far faster than Bihar.

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