Sikkim is a state in the northeastern region of India. Sikkim is the least populous and second smallest among the Indian states. As per provisional reports of Census India, the population of Sikkim in 2011 was 610,577 (6.10 lakh),
👉 Projected Population of Sikkim in 2026 is 709,000 (7 lakh)
Future Population Projection
| Year | Population | % Growth |
| 2011 | 611,000 | – |
| 2016 | 644,000 | 5.40% |
| 2021 | 678,000 | 5.12% |
| 2026 | 709,000 | 4.58% |
| 2031 | 736,000 | 3.95% |
| 2036 | 759,000 | 3.13% |
Census 2011-2021
Andhra Pradesh has a population growth rate of 13.05% during 2011-2021. Its estimated population in 2021 is 6.78 Lakhs* an increase of around 67 thousand from 2011.
| Sikkim | Census 2011 |
| Total Population | 610,577 (6.10 Lakh) |
| Male Population | 323,070 |
| Female Population | 287,507 |
| Sex Ratio | 890 |
| Population Density | 86/km2 |
| Population Rank | 28th |
| Total Area | 7,096 km2 |
| Area Rank | 27th |
| Average Literacy (%) | 82.6% |
| Formation | 16 May 1975 |
| Capital City | Gangtok |
Source: Census 2011 & Census Estimates
Sikkim Historical Population
Sikkim’s population has grown steadily over the last century, though the pace of growth has varied across decades. In 1901, the state had a population of about 59 thousand, which increased gradually with migration, administrative development, and improved living conditions. A brief decline was recorded in 1921, but population growth resumed afterward. By the 2011 Census, Sikkim’s population had reached 6.10 lakh, with particularly rapid growth during the 1971–1981 decade, when the population increased by over 50%.
| Year | Population | Decadal Growth |
|---|---|---|
| 1901 | 59,014 | — |
| 1911 | 87,920 | +49.0% |
| 1921 | 81,721 | −7.1% |
| 1931 | 109,808 | +34.4% |
| 1941 | 121,520 | +10.7% |
| 1951 | 137,725 | +13.3% |
| 1961 | 162,189 | +17.8% |
| 1971 | 209,843 | +29.4% |
| 1981 | 316,385 | +50.8% |
| 1991 | 406,457 | +28.5% |
| 2001 | 540,851 | +33.1% |
| 2011 | 610,577 | +12.9% |
Source: Census of India
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