Nauagarhi is a village in Munger District, Bihar, India. It is situated on the northern portion of Munger District. The village had a population of 34,356 as of the 2011 census.

Nauagarhi is located on the southern bank of the Ganges River, with the National Highway 33 passing through it. The village has a total area of 812 hectares.

At the 2011 census, Nauagarhi had a population of 34,356. The male population was 18,359, and the female population was 15,997. The working population constituted 28.08% of the total residents. The village's literacy rate stood at 60.52%, with 12,370 of the male residents and 8,422 of the female residents being literate.