Giridih district is a part of the Chota Nagpur plateau, with rocky soil and extensive forests.

[1][2][3] Note: The map alongside presents some of the notable locations in the district.

According to the 2011 Census of India, Deori had a total population of 1,285, of which 642 (50%) were males and 643 (50%) were females.

The total number of literate persons in Deori was 716 (67.36% of the population over 6 years).

[5] According to old British records, Deori PS was there after Giridh subdivision was formed in 1870.