According to the 2011 census of India, Benreu has 180 households. The effective literacy rate (i.e. the literacy rate of population excluding children aged 6 and below) is 79.17%.[2]
Demographics (2011 Census)[2]
| Total | Male | Female |
| Population | 850 | 435 | 415 |
| Children aged below 6 years | 101 | 52 | 49 |
| Scheduled caste | 0 | 0 | 0 |
| Scheduled tribe | 845 | 432 | 413 |
| Literates | 593 | 333 | 260 |
| Workers (all) | 639 | 332 | 307 |
| Main workers (total) | 189 | 112 | 77 |
| Main workers: Cultivators | 152 | 79 | 73 |
| Main workers: Agricultural labourers | 0 | 0 | 0 |
| Main workers: Household industry workers | 2 | 2 | 0 |
| Main workers: Other | 35 | 31 | 4 |
| Marginal workers (total) | 450 | 220 | 230 |
| Marginal workers: Cultivators | 179 | 59 | 120 |
| Marginal workers: Agricultural labourers | 61 | 52 | 9 |
| Marginal workers: Household industry workers | 71 | 34 | 37 |
| Marginal workers: Others | 139 | 75 | 64 |
| Non-workers | 211 | 103 | 108 |