| Name | Status | Population census 1991-03-01 | Population census 2001-03-01 | Population census 2011-02-09 | |
|---|---|---|---|---|---|
| Begusarai | District | 1,814,773 | 2,349,366 | 2,954,367 |
Source: Office of the Registrar General and Census Commissioner (web), Delimitation Commission of India (web).
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