| Rank | State/capital | km² |
|---|---|---|
| 1 | Niger State / minna | 74,363 |
| 2 | Borno State | 70,898 |
| 3 | Taraba State | 54,473 |
| 4 | Kaduna State | 46,053 |
| 5 | Bauchi State | 45,893 |
| 6 | Yobe State | 45,502 |
| 7 | Zamfara State | 39,762 |
| 8 | Adamawa State | 36,917 |
| 9 | Kwara State | 36,825 |
| 10 | Kebbi State | 36,800 |
| 11 | Benue State | 34,059 |
| 12 | Plateau State | 30,913 |
| 13 | Kogi State | 29,833 |
| 14 | Oyo State | 28,454 |
| 15 | Nasarawa State | 27,117 |
| 16 | Sokoto State | 25,973 |
| 17 | Katsina State | 24,192 |
| 18 | Jigawa State | 23,154 |
| 19 | Cross River State | 22,590 |
| 20 | Kano State | 20,131 |
| 21 | Gombe State | 18,768 |
| 22 | Edo State | 17,802 |
| 23 | Delta State | 17,698 |
| 24 | Ogun State | 16,762 |
| 25 | Ondo State | 15,500 |
| 26 | Rivers State | 11,077 |
| 27 | Bayelsa State | 10,773 |
| 28 | Osun State | 9,251 |
| - | Federal Capital Territory | 7,315 |
| 29 | Enugu State | 7,161 |
| 30 | Akwa Ibom State | 7,081 |
| 31 | Ekiti State | 6,353 |
| 32 | Abia State | 6,320 |
| 33 | Ebonyi State | 5,670 |
| 34 | Imo State | 5,530 |
| 35 | Anambra State | 4,844 |
| 36 | Lagos State | 3,345 |
