As India marks its 80th Independence Day, the country enters its ninth decade with one of the world's largest working-age populations. With an estimated population of around 1.46 billion and a median age of about 29 years, India has a significant demographic advantage. But the opportunity is not evenly distributed across the country.

Around 68 per cent of Indians, or nearly one billion people, are between 15 and 64 years of age. This large working-age population could support economic growth through manufacturing, services and domestic consumption. However, India now faces a widening demographic divide between an ageing South and a younger North, along with the challenge of creating enough jobs and increasing women's participation in the workforce.

South India Starts Ageing

Several southern and western states entered the demographic transition earlier after decades of investment in education, healthcare and family planning.

States such as Kerala and Tamil Nadu now have fertility rates well below the replacement level of 2.1 births per woman. Kerala, in particular, is experiencing a rapid increase in its elderly population, with people aged 60 and above accounting for a significant share of the state's population.

For these states, the demographic challenge is changing. Governments will increasingly have to prepare for a larger elderly population, smaller school-age cohorts and a reduced pool of young workers.

Industries in the South and West could also face greater competition for labour in the coming decades.

North Has Young Workforce

The demographic picture is markedly different in several northern states.

Bihar, Uttar Pradesh and Madhya Pradesh continue to have relatively young populations and are expected to contribute a substantial share of India's labour-force growth in the years ahead.

Bihar's median age is below 23, while its fertility rate remains higher than the national average.

This creates a potential economic connection between two parts of India. Industrial centres in the South and West will increasingly need workers, while younger populations in the North will need skills, employment and opportunities.

Migration Could Bridge Gap

Interstate migration and vocational training could therefore become increasingly important to India's economic future.

Workers from states with large young populations could be connected with employment opportunities in manufacturing, construction, logistics and services in states facing labour shortages.

However, migration will require more than employment opportunities. Affordable housing, transportation, healthcare, social security and access to public services will also be important for workers moving between states.

Women Remain Underused

India's demographic challenge is not limited to regional differences. Women's participation in the workforce remains another major gap.

Female labour force participation is significantly below male participation, particularly in urban areas. Women continue to face barriers including safety concerns, unpaid domestic responsibilities, limited childcare facilities and a shortage of flexible employment options.

Rural women have relatively higher participation, partly because of their involvement in agriculture and family-based economic activities. Urban female participation, however, remains considerably lower.

Increasing women's participation could significantly expand India's effective workforce and add to economic growth.

Job Creation Is Critical

A large working-age population does not automatically translate into a demographic dividend.

India must create enough productive employment to absorb millions of new entrants into the labour market. The focus will need to extend beyond low-productivity informal employment towards manufacturing, services, technology, green industries and export-oriented sectors.

Labour-intensive manufacturing could play an important role by creating jobs for workers with different levels of education and skills.

The challenge is particularly important for states such as Bihar and Uttar Pradesh, where large numbers of young people will enter the workforce over the coming decades.

Demographic Window Closing

India's demographic advantage also has a time limit.

Demographers expect the country's dependency ratio to reach a historic low around 2041, after which population ageing is likely to increase the proportion of dependants relative to the working-age population.

This gives India roughly the next 15 years to maximise the benefits of its demographic structure.

The priority will be to ensure that today's young population becomes a skilled and productive workforce before the window begins to narrow.

Three Priorities Ahead

India's demographic strategy will require action on three broad fronts.

First, stronger interstate skill and employment corridors can connect young workers with regions where labour demand is growing.

Second, investment in urban care infrastructure, including childcare, safe public transport and workplace support, can help more women enter and remain in paid employment.

Third, India needs job creation at scale, particularly in labour-intensive manufacturing and emerging industries.

India’s Demographic Test

India enters its 80th year of Independence with a rare demographic opportunity: a huge population, a relatively young workforce and a growing economy.

But population size alone will not guarantee prosperity.

The country must bridge the demographic gap between its younger North and ageing South, bring more women into productive employment and create millions of quality jobs.

If India manages this transition effectively, its demographic dividend could become one of the country's strongest economic advantages. If the opportunity is missed, the same demographic pressures could eventually become a constraint on growth.