Global Demography and Migration Notes

Demography

  • Statistical study of human populations.
    • Includes size, structure, growth, distribution, and vital statistics.

Key Uses of Demography

  • Government policy
  • Urban planning
  • Public health
  • Education and employment forecasting
  • Business and marketing

Demographic Transition

  • Stage 1: High Stationary
    • High birth and death rates; low growth, seen in pre-industrial societies.
  • Stage 2: Early Expanding
    • Death rates decline, birth rates remain high, leading to rapid population growth.
  • Stage 3: Late Expanding
    • Fertility declines due to urbanization, education, access to family planning, and rising costs of raising children; population growth slows.
  • Stage 4: Low Stationary
    • Low birth and death rates; stable or declining population.
  • Stage 5 (Debated): Decline or Aging
    • Fertility falls below replacement (TFR < 2.1); populations age and shrink.

Global Population

  • Crossed 8 billion in late 2022.
  • Growth slowed from over 2% annually in the 1960s to under 1% today.
  • Projected to reach 9.7 billion by 2050, then stabilize or decline by 2100 depending on fertility trends.

Fertility

  • Global TFR (Total Fertility Rate) in 2024: ~2.3 children per woman.
  • Below replacement levels in Europe (average: 1.5), East Asia (e.g., South Korea: 0.72), and North America (US: ~1.6).
  • Still above replacement in Sub-Saharan Africa and parts of South Asia.

Life Expectancy

  • Global average: ~73 years.
  • High: Japan (~85), Singapore, Switzerland.
  • Low: Chad (~52), Nigeria (~55).
  • Major causes of increased longevity: Vaccination, Public health systems, Chronic disease management.

Population Aging

  • Causes: Falling fertility and rising life expectancy.
  • Impacts: Increasing old-age dependency ratio and strain on pensions, healthcare, and labor markets.

Global Migration

  • Definition: Movement of people across political or administrative boundaries for residence or work.

Types of Migration

  • Internal: Movement within a country.
  • International: Crossing country borders.

Types of Migrants

  • Temporary labor migrants, Highly-skilled migrants, Irregular migrants, Refugees, Asylum seekers, Forced migrants, Return migrants, Family reunion.

Causes of Migration

  • Economic: Wage gaps, job opportunities, higher standard of living.
  • Social: Education and health care, family reunification, cultural ties.
  • Political: Conflict, persecution, insecurity or corruption.
  • Environmental: Climate change-induced displacement.

Migration Trends

  • Total international migrants: 281 million.
  • Top destinations: USA, Germany, Saudi Arabia, Canada, UAE.
  • Remittances (2023): 656billion656 billion sent to low- and middle-income countries.
    • Philippines: 38B38B (approx. 9.4% of GDP).
    • India: 125B125B (largest recipient).
  • Feminization of migration: ~48% of global migrants are women.

Key Global Challenges

  • Aging vs. Youth bulges: some nations shrinking, others booming.
  • Climate change migration: expected to displace 200million+200 million+ by 2050.
  • Urbanization: 70% of the world will live in cities by 2050.
  • Policy dilemmas: Immigration, migrant rights, technology to offset aging.

Key Takeaways

  • Population growth is slowing, but aging and urbanization are accelerating.
  • Migration will remain a key feature of globalization and economic development.
  • Demography shapes everything from labor markets to global politics.
  • Policy planning must adapt to demographic shifts in fertility, migration, and aging.