Madhubani

With 44,87,379 people at the 2011 Census, Madhubani was the 37th most populous of India's 640 districts and the 4th most populous of Bihar's 38. That is 4.3% of everyone living in Bihar at the time.

Literacy stood at 58.62%, 14.4 points below the national 72.98% — 3.2 points below the Bihar average. That ranked it 582nd of 640 districts nationally. The gap between male and female literacy was 24.0 points, 7.7 points above the national gap of 16.3.

The sex ratio was 926 women per 1,000 men (8 above the Bihar figure of 918). Among children aged 0–6 the ratio was 936, 18 above the national 918.

36.5% of the population were recorded as workers, 3.1 points above the Bihar rate. Female work participation was 24.6%, 5.5 points above the state figure.

Madhubani contained 6 towns — 4 with a municipal body of some kind, and 2 classed as census towns, meaning they met the census's urban test without having one. The largest was Madhubani (Nagar Parishad), with 75,736 people. That put 3.6% of the district in urban areas, 7.7 points below the Bihar share of 11.3%.