The population of the districts in the State of Bihar.
| Name | Status | Population census 1991-03-01 | Population census 2001-03-01 | |
|---|---|---|---|---|
| Araria | District | 1,611,638 | 2,158,608 | o |
| Aurangabad | District | 1,539,988 | 2,013,055 | o |
| Banka | District | 1,292,504 | 1,608,773 | o |
| Begusarai | District | 1,814,773 | 2,349,366 | o |
| Bhagalpur | District | 1,909,967 | 2,423,172 | o |
| Bhojpur | District | 1,792,771 | 2,243,144 | o |
| Buxar | District | 1,087,676 | 1,402,396 | o |
| Darbhanga | District | 2,510,959 | 3,295,789 | o |
| Gaya | District | 2,664,803 | 3,473,428 | o |
| Gopalganj | District | 1,704,310 | 2,152,638 | o |
| Jamui | District | 1,051,527 | 1,398,796 | o |
| Jehanabad | District | 1,174,900 | 1,514,315 | o |
| Kaimur (Bhabua) | District | 983,269 | 1,289,074 | o |
| Katihar | District | 1,825,380 | 2,392,638 | o |
| Khagaria | District | 987,227 | 1,280,354 | o |
| Kishanganj | District | 984,107 | 1,296,348 | o |
| Lakhisarai | District | 646,395 | 802,225 | o |
| Madhepura | District | 1,177,706 | 1,526,646 | o |
| Madhubani | District | 2,832,024 | 3,575,281 | o |
| Munger | District | 943,583 | 1,137,797 | o |
| Muzaffarpur | District | 2,953,903 | 3,746,714 | o |
| Nalanda | District | 1,996,257 | 2,370,528 | o |
| Nawada | District | 1,359,694 | 1,809,696 | o |
| Pashchim Champaran | District | 2,333,666 | 3,043,466 | o |
| Patna | District | 3,618,211 | 4,718,592 | o |
| Purba Champaran | District | 3,043,061 | 3,939,773 | o |
| Purnia | District | 1,878,885 | 2,543,942 | o |
| Rohtas | District | 1,917,416 | 2,450,748 | o |
| Saharsa | District | 1,132,413 | 1,508,182 | o |
| Samastipur | District | 2,716,929 | 3,394,793 | o |
| Saran | District | 2,572,980 | 3,248,701 | o |
| Sheikhpura | District | 420,260 | 525,502 | o |
| Sheohar | District | 377,699 | 515,961 | o |
| Sitamarhi | District | 2,013,796 | 2,682,720 | o |
| Siwan | District | 2,170,971 | 2,714,349 | o |
| Supaul | District | 1,342,841 | 1,732,578 | o |
| Vaishali | District | 2,146,065 | 2,718,421 | o |
| Bihar | State | 64,530,554 | 82,998,509 |
All urban entities (cities, towns and wards in outgrowths) in the State of Bihar with 5,000 inhabitants or more.
| Name | Status | District | City of Outgrowth | Population census 1991-03-01 | Population census 2001-03-01 | |
|---|---|---|---|---|---|---|
| Amarpur | Notified Area | Banka | 17,266 | 20,965 | o | |
| Araria | Municipality | Araria | 45,257 | 60,861 | o | |
| Areraj | Notified Area | Purba Champaran | ... | 20,356 | o | |
| Arrah | Municipality | Bhojpur | 157,082 | 203,380 | o | |
| Asarganj | Census Town | Munger | 4,926 | 5,739 | o | |
| Aurangabad | Municipality | Aurangabad | 47,565 | 79,393 | o | |
| Bagaha | Municipality | Pashchim Champaran | 64,627 | 91,467 | o | |
| Bahadurganj | Notified Area | Kishanganj | 21,123 | 28,118 | o | |
| Bairgania | Notified Area | Sitamarhi | 28,516 | 34,836 | o | |
| Bakhtiarpur | Notified Area | Patna | 26,867 | 32,293 | o | |
| Banka | Municipality | Banka | 27,369 | 35,455 | o | |
| Banmankhi Bazar | Notified Area | Purnia | 21,224 | 25,187 | o | |
| Barahiya | Municipality | Lakhisarai | 31,980 | 39,865 | o | |
| Barauli | Notified Area | Gopalganj | 28,311 | 34,653 | o | |
| Barauni IOC Township | Census Town | Begusarai | 12,594 | 13,882 | o | |
| Barbigha | Notified Area | Sheikhpura | 30,148 | 38,200 | o | |
| Barh | Municipality | Patna | 45,285 | 48,442 | o | |
| Begusarai | Municipality | Begusarai | 71,424 | 93,741 | o | |
| Behea | Notified Area | Bhojpur | 17,082 | 20,741 | o | |
| Belsand | Notified Area | Sitamarhi | 14,151 | 17,840 | o | |
| Bettiah | Municipality | Pashchim Champaran | 92,653 | 116,670 | o | |
| Bhabua | Municipality | Kaimur (Bhabua) | 27,041 | 41,775 | o | |
| Bhagalpur | Municipal Corporation | Bhagalpur | 253,225 | 340,767 | o | |
| Bihar | Municipality | Nalanda | 201,323 | 232,071 | o | |
| Bikramganj | Notified Area | Rohtas | 28,898 | 38,408 | o | |
| Birpur | Notified Area | Supaul | 14,742 | 17,982 | o | |
| Bodh Gaya | Notified Area | Gaya | 21,692 | 30,857 | o | |
| Buxar | Municipality | Buxar | 55,753 | 83,168 | o | |
| Chakia | Notified Area | Purba Champaran | 13,708 | 16,628 | o | |
| Chanpatia | Notified Area | Pashchim Champaran | 19,320 | 22,038 | o | |
| Chapra | Municipality | Saran | 136,877 | 179,190 | o | |
| Colgong | Municipality | Bhagalpur | 17,899 | 22,049 | o | |
| Dalsinghsarai | Notified Area | Samastipur | 16,738 | 20,196 | o | |
| Darbhanga | Municipal Corporation | Darbhanga | 218,391 | 267,348 | o | |
| Daudnagar | Municipality | Aurangabad | 30,348 | 38,014 | o | |
| Dehri | Municipality | Rohtas | 93,694 | 119,057 | o | |
| Dhaka | Notified Area | Purba Champaran | 24,745 | 32,632 | o | |
| Digha-Mainpura | Ward of Outgrowth | Patna | Patna | ... | 53,964 | o |
| Dighwara | Notified Area | Saran | 22,650 | 27,367 | o | |
| Dinapur Cantonment | Cantonment (Board) | Patna | 23,491 | 28,234 | o | |
| Dinapur Nizamat | Municipality | Patna | 84,616 | 131,176 | o | |
| Dumra | Notified Area | Sitamarhi | 11,632 | 14,535 | o | |
| Dumraon | Municipality | Buxar | 35,068 | 45,806 | o | |
| Fatwah | Notified Area | Patna | 30,668 | 38,672 | o | |
| Forbesganj | Municipality | Araria | 34,526 | 41,499 | o | |
| Gaya | Municipal Corporation | Gaya | Gaya | 219,675 | 385,432 | o |
| Ghoghardiha | Notified Area | Madhubani | 12,020 | 14,526 | o | |
| Gogri Jamalpur | Notified Area | Khagaria | 24,614 | 31,106 | o | |
| Gopalganj | Municipality | Gopalganj | 35,522 | 54,449 | o | |
| Habibpur | Census Town | Bhagalpur | 6,894 | 9,366 | o | |
| Hajipur | Municipality | Vaishali | 87,687 | 119,412 | o | |
| Hilsa | Notified Area | Nalanda | 29,923 | 37,775 | o | |
| Hisua | Notified Area | Nawada | 18,609 | 25,205 | o | |
| Islampur | Notified Area | Nalanda | 24,959 | 29,868 | o | |
| Jagdishpur | Municipality | Bhojpur | 21,384 | 28,085 | o | |
| Jainagar | Notified Area | Madhubani | 16,978 | 19,567 | o | |
| Jamalpur | Municipality | Munger | 86,112 | 96,983 | o | |
| Jamhaur | Notified Area | Aurangabad | 6,729 | 8,608 | o | |
| Jamui | Municipality | Jamui | 43,554 | 66,797 | o | |
| Janakpur Road | Notified Area | Sitamarhi | 9,590 | 13,358 | o | |
| Jehanabad | Municipality | Jehanabad | 52,332 | 81,503 | o | |
| Jhajha | Notified Area | Jamui | 31,013 | 36,447 | o | |
| Jhanjharpur | Notified Area | Madhubani | 2,019 | 24,112 | o | |
| Jogabani | Notified Area | Araria | 22,495 | 29,991 | o | |
| Kanti | Notified Area | Muzaffarpur | 16,037 | 20,871 | o | |
| Kasba | Notified Area | Purnia | 22,006 | 25,524 | o | |
| Kataiya | Notified Area | Gopalganj | 13,336 | 17,912 | o | |
| Katihar | Municipality | Katihar | Katihar | 135,436 | 175,199 | o |
| Katihar Rly. Colony | Ward of Outgrowth | Katihar | Katihar | ... | 15,674 | o |
| Khagaria | Municipality | Khagaria | 34,190 | 45,221 | o | |
| Khagaul | Municipality | Patna | Khagaul | 40,453 | 48,306 | o |
| Kharagpur | Notified Area | Munger | 25,319 | 27,075 | o | |
| Khusrupur | Notified Area | Patna | 10,258 | 12,204 | o | |
| Kishanganj | Municipality | Kishanganj | 64,568 | 85,590 | o | |
| Koath | Notified Area | Rohtas | 13,544 | 15,815 | o | |
| Koilwar | Notified Area | Bhojpur | 10,263 | 19,928 | o | |
| Lakhisarai | Municipality | Lakhisarai | 53,360 | 77,875 | o | |
| Lalganj | Municipality | Vaishali | 24,927 | 29,873 | o | |
| Lauthaha | Notified Area | Purba Champaran | 5,823 | 7,745 | o | |
| Madhepura | Municipality | Madhepura | 32,838 | 45,031 | o | |
| Madhubani | Municipality | Madhubani | 53,747 | 66,340 | o | |
| Maharajganj | Notified Area | Siwan | 17,165 | 20,860 | o | |
| Mahnar Bazar | Municipality | Vaishali | 30,743 | 37,370 | o | |
| Mairwa | Notified Area | Siwan | 15,215 | 18,710 | o | |
| Makhdumpur | Notified Area | Jehanabad | 22,138 | 30,109 | o | |
| Maner | Notified Area | Patna | 24,343 | 30,082 | o | |
| Manihari | Notified Area | Katihar | 17,252 | 21,803 | o | |
| Marhaura | Notified Area | Saran | 20,630 | 24,548 | o | |
| Masaurhi | Notified Area | Patna | 33,049 | 45,248 | o | |
| Mirganj | Notified Area | Gopalganj | 19,697 | 23,576 | o | |
| Mohiuddinagar | Notified Area | Samastipur | 11,012 | 13,769 | o | |
| Mokameh | Municipality | Patna | 59,528 | 56,615 | o | |
| Motihari | Municipality | Purba Champaran | 77,432 | 100,683 | o | |
| Motipur | Notified Area | Muzaffarpur | 17,821 | 21,957 | o | |
| Munger | Municipality | Munger | 150,112 | 188,050 | o | |
| Murliganj | Notified Area | Madhepura | 20,547 | 22,936 | o | |
| Muzaffarpur | Municipal Corporation | Muzaffarpur | 241,107 | 305,525 | o | |
| Nabinagar | Notified Area | Aurangabad | 14,879 | 19,050 | o | |
| Narkatiaganj | Notified Area | Pashchim Champaran | 30,977 | 40,830 | o | |
| Naugachhia | Notified Area | Bhagalpur | 31,250 | 38,287 | o | |
| Nawada | Municipality | Nawada | 53,174 | 81,891 | o | |
| Nirmali | Notified Area | Supaul | 13,783 | 16,141 | o | |
| Nokha | Notified Area | Rohtas | 16,350 | 22,354 | o | |
| Paharpur | Census Town | Gaya | ... | 5,753 | o | |
| Patna | Municipal Corporation | Patna | Patna | 917,243 | 1,366,444 | o |
| Phulwari Sharif | Notified Area | Patna | 35,213 | 53,451 | o | |
| Piro | Notified Area | Bhojpur | 18,419 | 25,811 | o | |
| Purnia | Municipality | Purnia | 114,912 | 171,687 | o | |
| Rafiganj | Notified Area | Aurangabad | 18,531 | 24,992 | o | |
| Raghunathpur | Census Town | Katihar | ... | 5,601 | o | |
| Rajgir | Notified Area | Nalanda | 23,730 | 33,738 | o | |
| Rajopatti Dumra - Talkhapur Dumra (Ward No. 32) | Ward of Outgrowth | Sitamarhi | Sitamarhi | ... | 5,829 | o |
| Rajopatti Dumra - Talkhapur Dumra (Ward No. 34) | Ward of Outgrowth | Sitamarhi | Sitamarhi | ... | 5,886 | o |
| Ramnagar | Notified Area | Pashchim Champaran | 27,791 | 38,554 | o | |
| Raxaul Bazar | Municipality | Purba Champaran | 27,678 | 41,610 | o | |
| Revelganj | Municipality | Saran | 27,075 | 34,042 | o | |
| Rosera | Municipality | Samastipur | 24,234 | 27,492 | o | |
| Saharsa | Municipality | Saharsa | 80,149 | 125,167 | o | |
| Samastipur | Municipality | Samastipur | Samastipur | 58,952 | 55,589 | o |
| Samastipur Rly. Colony | Ward of Outgrowth | Samastipur | Samastipur | ... | 6,409 | o |
| Sasaram | Municipality | Rohtas | 98,122 | 131,172 | o | |
| Shahpur | Notified Area | Bhojpur | 11,254 | 14,469 | o | |
| Sheikhpura | Municipality | Sheikhpura | 34,429 | 43,113 | o | |
| Sheohar | Notified Area | Sheohar | 13,915 | 21,262 | o | |
| Sherghati | Notified Area | Gaya | 25,574 | 32,526 | o | |
| Silao | Notified Area | Nalanda | 16,283 | 20,177 | o | |
| Sitamarhi | Municipality | Sitamarhi | Sitamarhi | 44,935 | 56,766 | o |
| Siwan | Municipality | Siwan | 63,125 | 109,919 | o | |
| Sonepur | Notified Area | Saran | 27,124 | 33,490 | o | |
| Sugauli | Notified Area | Purba Champaran | 23,973 | 31,432 | o | |
| Sultanganj | Notified Area | Bhagalpur | 34,164 | 41,958 | o | |
| Supaul | Municipality | Supaul | 40,588 | 54,085 | o | |
| Thakurganj | Notified Area | Kishanganj | 13,589 | 15,300 | o | |
| Tikari | Municipality | Gaya | 14,202 | 17,621 | o | |
| Warisaliganj | Notified Area | Nawada | 22,773 | 31,347 | o |
Source: (1991) Rand McNally International Atlas 1994, School of Planning & Architecture (web).
(2001) Office of the Registrar General and Census Commissioner (web), Delimitation Commission of India (web).
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