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Population of Bihar 2025
Bihar is a state in the eastern region of India. It is the third-largest state by population and the twelfth-largest by area. As per provisional reports of Census India, the population of Bihar in 2011 is 104,099,452 (10.41 Crore), and according to Bihar Caste Census 2023, its population in 2023 is 130,725,310 (13.07 Crore or 130 million)
Source: Bihar Census Survey 2023
also read about Bihar Population By Caste and Religion
| Year | Population | % Growth |
| 2011 | 104,099,000 | – |
| 2016 | 114,176,000 | 9.68% |
| 2021 | 123,083,000 | 7.80% |
| 2026 | 132,265,000 | 7.46% |
| 2031 | 141,041,000 | 6.64% |
| 2036 | 148,575,000 | 5.34% |
Source: Census 2011 & Census Population Projection Report 2021-36
Read about Religion in Bihar
Census 2011-2021
Bihar has a population growth rate during 2011-2021 of 18.15%, the highest in India. Its estimated population in 2021 is 12.49 Crore* an increase of around 1.89 crores from 2011.
| Bihar | Census 2011 | 2023 State Census |
| Total Population | 104,099,452 (10.41 Crore) | 13 Crore |
| Male Population | 54,278,157 | 6.7 Crore |
| Female Population | 49,821,295 | 6.3 Crore |
| Sex Ratio | 918 | 923 |
| Population Density | 1,102/km2 | 1,307/km2 |
| Population Rank | 3rd | |
| Total Area | 94,163 km2 | |
| Area Rank | 12th | |
| Average Literacy (%) | 61.80% | |
| Capital City | Patna | |
| Formation (State) | 26 January 1950 |
Source: Census 2011 & Census Population Projection Report 2021-36
Read about Religion in Bihar
Bihar Historic Population
Bihar has a population growth rate of 18.24% during 2011-2021. In 1910 Population of Bihar was 2.1 Crore & in the Year 2021, it’s estimated to reach 12.30 Crore, an increase of almost 10 Crore. Let’s look at decade population & percentage change from the Year 1910 to 2021
| Census Year | Population | Absolute Change | Percentage Change |
| 1901 | 21,243,632 | – | – |
| 1911 | 21,567,159 | +323,527 | +1.52 |
| 1921 | 21,358,905 | -208,254 | -0.97 |
| 1931 | 23,438,371 | +2,079,466 | +9.74 |
| 1941 | 26,302,771 | +2,864,400 | +12.22 |
| 1951 | 29,085,017 | +2,782,246 | +10.58 |
| 1961 | 34,840,968 | +5,755,951 | +19.79 |
| 1971 | 42,126,236 | +7,285,268 | +20.91 |
| 1981 | 52,302,665 | +10,176,429 | +24.16 |
| 1991 | 64,530,554 | +12,227,889 | +23.38 |
| 2001 | 82,998,509 | +18,467,955 | +28.62 |
| 2011 | 104,099,452 | +21,100,943 | +25.42 |
| 2021 (Estimated) | 123,083,000 | +18,983,548 | +18.24 |
Source: Census 2011 & Census Population Projection report 2021-36
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