Physical Features |
 | Latitude | | 24°-20'-10" ~ 27°-31'-15" N | |
 | Longitude | 82°-19'-50" ~ 88°-17'-40" E |
 | Rural Area | 92,257.51 sq. kms |
 | Urban Area | 1,095.49 sq. kms |
 | Total Area | 94,163.00 sq. kms |
 | Height above Sea-Level | 173 Feet |
 | Normal Rainfall | 1,205 mm |
 | Avg. Number of Rainy Days | 52.5 Days in a Year |
|  | |
Administrative Units |
 | Divisions | | 9 | |
 | Districts | 38 |
 | Sub-Divisions | 101 |
 | CD Blocks | 534 |
 | Panchayats | 8,406 |
 | Number of Revenue Villages | 45,103 |
 | Number of Urban Agglomerations | 14 |
 | Number of Towns | 199 |
| - Statutory Towns | 139 |
| - Non-Statutory Towns | 60 |
 | Police Stations | 853 |
| - Civil Police Stations | 813 |
| - Railway Police Stations | 40 |
 | Police Districts | 43 |
| - Civil Police District | 39 |
| - Railway Police District | 4 |
| | |
Key Statistics - as per 2011 Census (Provisional) |
 | Population | | 10,38,04,637 | |
| - Male | 5,41,85,347 |
| - Female | 4,96,19,290 |
 | Population (0~6 Years Group) | |
| - In Absolute Numbers | 1,85,82,229 |
| |
 | 96,15,280 |
|
| |
 | 89,66,949 |
|
| - Percentage of Total Population | 17.90% |
| |
 | 17.75% |
|
| |
 | 18.07% |
|
 | Literacy | |
| - In Absolute Numbers | 5,43,90,254 |
| |
 | 3,27,11,975 |
|
| |
 | 2,16,78,279 |
|
| - Percentage of Total Population | 63.82% |
| |
 | 73.39% |
|
| |
 | 53.33% |
|
 | Decadal Population Growth (2001-2011) | |
| - Absolute | 2,08,06,128 |
| - As Percentage | 25.07% |
 | Highest Decadal Growth at | Madhepura District (30.65%) |
 | Lowest Decadal Growth at | Gopalganj District (18.83%) |
| - Civil Police Stations | 813 |
| - Railway Police Stations | 40 |
 | Density of Population | 1,102 per sq kms |
| - Highest Density | Sheohar, 1882 per sq kms |
| - Lowest Density | Kaimur, 488 per sq kms |
 | Most Populous District | Patna: 57,72,804 |
 | Least Populous District | Sheikhpura: 6,34,927 |
 | Sex Ratio (Females/Thousand Males) | 916 |
| - Highest Ratio | (Gopalganj) 1,015 |
| - Lowest Ratio | (Munger and Bhagalpur) 879 |
 | Highest Literacy Rate | Rohtas, 75.59% |
 | Lowest Literacy Rate | Purnia, 52.49% |
 | Average Population of a District | 27,31,701 |