Sex Ratio in India

The sex ratio in India is the count of females per 1,000 males in a defined population, a core demographic indicator collected primarily through the decennial Census of India conducted under the Census Act, 1948, and operationalized by the Office of the Registrar General and Census Commissioner (ORGI) within the Ministry of Home Affairs. India departs from the international convention, which expresses the ratio as males per 100 females; the Indian formulation of females per 1,000 males is the standard used across the Census, the National Family Health Survey (NFHS) administered by the Ministry of Health and Family Welfare, and the Sample Registration System (SRS). For the Union Public Service Commission's General Studies Paper I, the indicator is examined within population and demographic topics, and aspirants are expected to distinguish its several variants and the statutory architecture surrounding it. The biologically expected ratio at birth lies near 950 females per 1,000 males, against which India's recorded figures reveal a persistent and policy-relevant deficit.

The principal measure, the overall sex ratio, divides the total female population by the total male population and multiplies by 1,000. Census 2011 recorded an overall sex ratio of 943, the highest since the 1961 Census, up from 933 in 2001. The figure is computed from the complete population enumeration conducted in two phases—Houselisting and Housing, followed by Population Enumeration—with the reference date fixed at 00:00 hours on 1 March of the census year. Because the overall ratio aggregates all age cohorts, it is influenced by differential mortality, life expectancy gains favouring women, and male-dominated interstate migration, which can depress the recorded ratio in receiving states such as Haryana and elevate it in sending states.

A more diagnostically sensitive variant is the child sex ratio (CSR), the number of girls per 1,000 boys in the 0–6 age group, which isolates contemporary practices of sex-selective abortion and female infant neglect from the confounding effects of adult mortality and migration. Census 2011 reported a CSR of 919, a decline from 927 in 2001 and the lowest since independence, signalling that the modest rise in the overall ratio masked a deteriorating situation among young children. A third measure, the sex ratio at birth (SRB), is derived from the SRS and registration data rather than the Census and captures the ratio in the year of birth itself; the SRS has reported figures in the range of 899–907 in recent cycles, well below the natural benchmark and indicative of prenatal sex selection.

Geographically, Kerala and Puducherry are the only major states to record sex ratios exceeding 1,000 (1,084 and 1,037 respectively in Census 2011), while Haryana (879), Punjab (895), and Jammu and Kashmir registered the lowest figures, and the National Capital Territory of Delhi remained among the most adverse urban jurisdictions. To address the decline in the child cohort, the Government of India launched the Beti Bachao Beti Padhao scheme on 22 January 2015 from Panipat, Haryana, jointly steered by the Ministries of Women and Child Development, Health and Family Welfare, and Education, targeting districts with the worst CSR. The legislative cornerstone remains the Pre-Conception and Pre-Natal Diagnostic Techniques (Prohibition of Sex Selection) Act, 1994, amended in 2003 to cover pre-conception techniques, which prohibits communication of foetal sex.

The sex ratio must be distinguished from adjacent demographic concepts with which it is frequently conflated. It differs from the dependency ratio, which relates non-working age cohorts to the working-age population, and from the literacy rate and fertility rate (TFR), though these correlate with it. It is also separate from the gender development and gender inequality indices compiled by the UNDP, which are composite measures of capability and empowerment rather than head counts. Critically, the overall sex ratio and the child sex ratio move on different logics: a state may show an improving overall ratio through female longevity gains while its CSR worsens through sex selection, so the two cannot be read as a single trend.

Controversies centre on the durability of the deficit despite legal prohibition. Conviction rates under the PCPNDT Act have remained low, and the diffusion of affordable ultrasonography has outpaced enforcement, producing the paradox of declining child ratios amid rising prosperity in states like Punjab and Haryana—evidence that the practice intensifies, not recedes, with affluence and small-family norms. The NFHS-5 (2019–21) offered a tentative reversal signal, reporting a sex ratio at birth of 929 among children born in the five years preceding the survey, though sampling differences from the SRS counsel caution. The delay of Census 2021, postponed beyond its scheduled date, has left India without an updated full enumeration, forcing reliance on survey and registration proxies.

For the working practitioner—whether a desk officer drafting demographic briefs, a UPSC aspirant, or a policy researcher—the sex ratio functions as a compact proxy for the cumulative status of women, the reach of welfare schemes, and the gap between statute and behaviour. Precise usage demands specifying which variant is invoked, the source dataset, and the reference year, since the overall ratio, child sex ratio, and sex ratio at birth carry distinct policy implications. Misreading an improving overall figure as evidence of declining sex selection is a common analytical error that the child-cohort and birth measures exist precisely to prevent.