Tamil Nadu’s Total Fertility Rate (TFR) declined to 1.3 in 2026, below the replacement level of 2.1 required for population stability.
TFR indicates the average number of children a woman is expected to have during her reproductive period.
Tamil Nadu’s TFR was 1.4 in 2025, while India’s overall TFR stands at 1.9.
The State is witnessing an ageing population, with 16% of people above 60 years; this may increase to 20% in the next 10 years.
Economic factors, women’s workforce participation, delayed marriages and changing family preferences are among the factors influencing fertility decline.
Tamil Nadu has a high women workforce participation, with 41 out of every 100 working women in India coming from the State.
The government emphasised institutional deliveries, pregnancy spacing of 2–3 years, maternal health support and strengthening healthcare services.