Purnia's 2026 population is now estimated at 581,955. In 1950, the population of Purnia was 24,605. Purnia has grown by 15,473 in the last year, which represents a 2.73% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Purnia, which typically includes Purnia's population in addition to adjacent suburban areas.
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Delhi | 35,518,400 | 2.46% |
| Mumbai | 22,539,300 | 2.04% |
| Kolkata | 16,151,400 | 1.93% |
| Bangalore | 14,771,700 | 2.61% |
| Chennai | 12,623,100 | 2.33% |
| Hyderabad | 11,608,400 | 2.39% |
| Ahmedabad | 9,272,670 | 2.33% |
| Surat | 8,820,660 | 2.78% |
| Pune | 7,706,270 | 2.4% |
| Kozhikode | 4,520,410 | 3.03% |
| Jaipur | 4,514,920 | 2.35% |
| Malappuram | 4,487,920 | 3.31% |
| Lucknow | 4,228,750 | 2.33% |
| Indore | 3,570,830 | 2.53% |
| Kanpur | 3,410,920 | 1.96% |
| Nagpur | 3,237,750 | 2.13% |
| Coimbatore | 3,234,160 | 2.39% |
| Thiruvananthapuram | 3,156,950 | 2.75% |
| Bhopal | 2,748,760 | 2.33% |
| Patna | 2,748,390 | 2.19% |
| Agra | 2,535,490 | 2.31% |
| Kannur | 2,524,680 | 2.42% |
| Visakhapatnam | 2,496,820 | 2.31% |
| Vadodara | 2,478,540 | 2.21% |
| Vijayawada | 2,409,770 | 2.51% |
| Nashik | 2,408,010 | 2.42% |
| Kollam | 2,317,980 | 2.92% |
| Rajkot | 2,203,310 | 2.46% |
| Ludhiana | 2,071,490 | 2.11% |
| Raipur | 1,974,130 | 2.63% |
| Raipur | 1,974,130 | 2.63% |
| Raipur | 1,974,130 | 2.63% |
| Madurai | 1,953,270 | 2.18% |
| Meerut | 1,916,080 | 2.2% |
| Varanasi | 1,865,080 | 2.14% |
| Tiruppur | 1,833,070 | 2.77% |
| Srinagar | 1,818,570 | 2.3% |
| Srinagar | 1,818,570 | 2.3% |
| Aurangabad | 1,809,600 | 2.39% |
| Aurangabad | 1,809,600 | 2.39% |
| Jamshedpur | 1,806,600 | 2.2% |
| Jodhpur | 1,703,860 | 2.37% |
| Jodhpur | 1,703,860 | 2.37% |
| Ranchi | 1,659,720 | 2.34% |
| Kota | 1,639,630 | 2.52% |
| Kota | 1,639,630 | 2.52% |
| Kota | 1,639,630 | 2.52% |
| Jabalpur | 1,615,460 | 2.1% |
| Asansol | 1,598,450 | 2.12% |
| Gwalior | 1,578,940 | 2.3% |
| Allahabad | 1,555,900 | 2.11% |
| Amritsar | 1,543,480 | 2.14% |
| Dhanbad | 1,471,280 | 2.04% |
| Bareilly | 1,446,270 | 2.34% |
| Aligarh | 1,413,060 | 2.43% |
| Moradabad | 1,403,580 | 2.46% |
| Mysore | 1,375,940 | 2.25% |
| Tiruchirappalli | 1,296,500 | 2.1% |
| Chandigarh | 1,293,580 | 2.18% |
| Saharanpur | 1,275,830 | 2.68% |
| Guwahati | 1,250,320 | 2.14% |
| Salem | 1,247,700 | 2.21% |
| Jalandhar | 1,193,480 | 2.22% |
| Solapur | 1,130,210 | 1.99% |
| Warangal | 1,105,740 | 2.34% |
| Guntur | 984,920 | 2.34% |
| Firozabad | 965,089 | 2.48% |
| Bhiwandi | 964,215 | 2.15% |
| Puducherry | 962,874 | 2.33% |
| Cherthala | 958,336 | 2.94% |
| Kottayam | 914,278 | 3.26% |
| Nellore | 879,934 | 2.46% |
| Bikaner | 872,688 | 2.2% |
| Muzaffarnagar | 858,867 | 2.61% |
| Amravati | 842,613 | 2.14% |
| Gorakhpur | 832,937 | 2% |
| Gorakhpur | 832,937 | 2% |
| Cuttack | 821,467 | 2.06% |
| Tirupati | 818,428 | 2.65% |
| Malegaon | 817,947 | 2.28% |
| Belgaum | 817,205 | 2.19% |
| Mangalore | 795,066 | 2.1% |
| Kurnool | 784,461 | 2.5% |
| Bhavnagar | 783,199 | 2.13% |
| Gulbarga | 768,923 | 2.28% |
| Jammu | 766,223 | 1.96% |
| Durgapur | 756,574 | 2.14% |
| Durgapur | 756,574 | 2.14% |
| Jhansi | 722,089 | 2.16% |
| Erode | 721,376 | 2.24% |
| Jamnagar | 704,603 | 1.97% |
| Patiala | 701,719 | 2.45% |
| Bilaspur | 698,982 | 2.42% |
| Bilaspur | 698,982 | 2.42% |
| Bilaspur | 698,982 | 2.42% |
| Bilaspur | 698,982 | 2.42% |
| Bilaspur | 698,982 | 2.42% |
| Raurkela | 690,942 | 2.07% |
| Agartala | 687,817 | 2.6% |
| Ujjain | 682,864 | 2.17% |
| Kolhapur | 682,552 | 2.02% |
| Mathura | 680,262 | 2.36% |
| Imphal | 679,030 | 2.5% |
| Ajmer | 678,309 | 2.05% |
| Hosur | 668,932 | 3.48% |
| Sangli | 649,082 | 2.09% |
| Udaipur | 643,855 | 2.21% |
| Udaipur | 643,855 | 2.21% |
| Udaipur | 643,855 | 2.21% |
| Jalgaon | 642,970 | 2.25% |
| Jalgaon | 642,970 | 2.25% |
| Vellore | 639,404 | 2.16% |
| Gaya | 637,382 | 2.19% |
| Tirunelveli | 629,329 | 2.09% |
| Panipat | 625,020 | 2.27% |
| Rajahmundry | 605,469 | 2.1% |
| Begusarai | 605,096 | 3.16% |
| Bellary | 599,562 | 2.33% |
| Muzaffarpur | 580,553 | 2.33% |
| Kakinada | 575,776 | 2.14% |
| Latur | 549,439 | 2.3% |
| Bhagalpur | 536,667 | 2.14% |
| Rohtak | 534,040 | 2.29% |
| Shillong | 532,490 | 2.37% |
| Raniganj | 523,490 | 3.07% |
| Anantapur | 522,676 | 2.41% |
| Bhilwara | 519,048 | 2.31% |
| Yamunanagar | 506,441 | 2.16% |
| Alwar | 492,649 | 2.31% |
| Sagar | 492,371 | 2.17% |
| Dhulian | 490,720 | 2.9% |
| Akola | 490,505 | 1.94% |
| Rampur | 484,287 | 2.24% |
| Rampur | 484,287 | 2.24% |
| Rampur | 484,287 | 2.24% |
| Gandhidham | 478,879 | 2.79% |
| Ottappalam | 478,032 | 2.86% |
| Baharampur | 476,182 | 2.44% |
| Bijapur | 475,590 | 2.32% |
| Karnal | 470,104 | 2.43% |
| Barddhaman | 468,105 | 2.2% |
| Korba | 465,712 | 2.1% |
| Karimnagar | 461,530 | 2.43% |
| Brahmapur | 455,415 | 2.11% |
| Junagadh | 454,309 | 2.28% |
| Dindigul | 449,246 | 2.41% |
| Ahmadnagar | 440,670 | 1.95% |
| Anand | 429,770 | 2.36% |
| Bihar Sharif | 428,280 | 2.31% |
| Roorkee | 426,951 | 2.67% |
| Bathinda | 425,092 | 2.36% |
| Aizawl | 424,478 | 2.31% |
| Shimoga | 419,532 | 2.14% |
| Karur | 416,661 | 2.66% |
| Tumkur | 408,050 | 2.2% |
| Ichalkaranji | 407,139 | 2.07% |
| Dewas | 405,021 | 2.26% |
| Parbhani | 402,845 | 2.15% |
| Hisar | 395,351 | 2.12% |
| Khammam | 391,864 | 2.37% |
| Haldwani | 391,478 | 2.57% |
| Darbhanga | 390,728 | 2.1% |
| Habra | 390,202 | 2.14% |
| Satna | 389,835 | 2.23% |
| Farrukhabad | 387,804 | 2.17% |
| Jalna | 384,665 | 2.2% |
| Arrah | 378,233 | 2.31% |
| Hapur | 364,613 | 2.24% |
| Nizamabad | 364,301 | 1.96% |
| Nizamabad | 364,301 | 1.96% |
| Kharagpur | 358,954 | 2% |
| Kharagpur | 358,954 | 2% |
| Ratlam | 353,657 | 2.13% |
| New Delhi | 257,803 | 0.98% |
