Population trends

Story hook

It is 2023. Japan's NHK news reports a record: 30,000 elderly Japanese died alone in their homes in just 3 months (January-March), undiscovered for days. The country's median age is 49 years. Birth rate has crashed to 1.20 TFR. Japan is the world's first "super-aged" society.

Across the East China Sea, China is sliding into the same trap. Population peaked at 142.6 crore in 2022; began declining 2023. Old-age dependency ratio projected to surge from 21 (2024) to 56 by 2050. The legacy of the one-child policy (1979- 2015) is biting.

And India? In 2024, we are the world's most populous country (142.86 crore, UNFPA April 2023). We are still young — median age 28.4 years. But our demographic transition is underway: TFR has fallen to 2.0 (NFHS-5, replacement level), 60+ population is 10.5% (15 crore), and will double by 2050 to 20.8%. Some Indian states — Kerala, Tamil Nadu — are already aging like East Asia did 30 years ago.

This file traces India's demographic transition — what's coming when our demographic dividend window closes around 2055.

Why this matters for UPSC

For UPSC:

• Prelims: Demographic Transition Theory (Warren Thompson 1929), TFR replacement level 2.1, demographic dividend, old age dependency ratio, NFHS-5, LASI 2017-18.
• Mains GS-I + GS-II: Population aging consequences, demographic dividend window, intergenerational equity, social security, healthcare reform.
• Interview: Personal opinion on aging society's policy challenges + immigration.