Simri Bakhtiarpur — UN urban centre
Simri Bakhtiarpur: 311,434 people. Reference: 2025 annual estimate · World rank #1,841 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 11357; territory: India (IND). UN source workbook.
Method: Degree of Urbanisation (contiguous 1 km2 cells, density 1,500+ people/km2, total 50,000+). This is a source-defined urban centre, not a municipality or province. No association with a separate administrative entity is inferred from proximity or name.
Source centroid: 25.7107, 86.595. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 52,963 | Estimate |
| 1980 | 53,888 | Estimate |
| 1985 | 54,574 | Estimate |
| 1990 | 74,392 | Estimate |
| 1995 | 88,848 | Estimate |
| 2000 | 105,652 | Estimate |
| 2005 | 119,107 | Estimate |
| 2010 | 129,786 | Estimate |
| 2015 | 253,611 | Estimate |
| 2020 | 304,741 | Estimate |
| 2025 | 311,434 | Estimate |
| 2030 | 354,381 | Projection |
| 2035 | 371,228 | Projection |
| 2040 | 390,001 | Projection |
| 2045 | 427,276 | Projection |
| 2050 | 442,490 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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