| Name | Population | Altitude | Latitude | Longitude |
| Niamey : | 774 245 | 227 m | 13°40'0.1" N | 1°46'60.0" E |
| Niamey : | 774 245 | 227 m | 13°31'0.1" N | 2°7'0.0" E |
| Zinder : | 191 440 | 467 m | 13°48'0.0" N | 8°58'60.0" E |
| Maradi : | 163 501 | 374 m | 13°29'30.1" N | 7°5'47.0" E |
| Agadez : | 88 569 | 529 m | 16°58'26.0" N | 7°59'27.0" E |
| Alarsas : | 88 561 | 537 m | 17°1'0.1" N | 8°0'0.0" E |
| Arlit : | 83 400 | 439 m | 18°43'57.0" N | 7°22'5.0" E |
| Tahoua : | 80 432 | 382 m | 14°53'25.1" N | 5°16'4.0" E |
| Dosso : | 49 755 | 241 m | 13°2'39.8" N | 3°11'41.0" E |
| Birnin Konni : | 48 103 | 258 m | 13°48'0.0" N | 5°15'0.0" E |
| Tessaoua : | 35 778 | 409 m | 13°45'11.9" N | 7°59'11.0" E |
| Gaya : | 33 054 | 173 m | 11°53'16.1" N | 3°26'48.0" E |
| Dogondoutchi : | 31 770 | 228 m | 13°38'46.0" N | 4°1'44.0" E |
| Dogonduchi : | 31 767 | 228 m | 13°38'46.0" N | 4°1'44.0" E |
| Diffa : | 27 951 | 286 m | 13°18'56.2" N | 12°36'32.0" E |
| Ayorou : | 26 290 | 225 m | 14°43'53.0" N | 0°55'10.0" E |
| Madaoua : | 24 806 | 344 m | 14°4'32.9" N | 5°57'31.0" E |
| Mayahi : | 22 185 | 385 m | 13°57'28.1" N | 7°40'6.0" E |
| Tera (Téra) : | 21 097 | 231 m | 14°0'38.2" N | 0°45'11.0" E |
| Mirria : | 20 724 | 406 m | 13°42'51.1" N | 9°9'2.0" E |
| Tibiri : | 20 019 | 343 m | 13°34'14.2" N | 7°2'40.0" E |
| Dakoro : | 19 799 | 403 m | 14°30'38.2" N | 6°45'54.0" E |
| Magaria : | 19 421 | 396 m | 12°59'51.0" N | 8°54'38.0" E |
| Tillabery (Tillabéry) : | 19 263 | 212 m | 14°12'42.1" N | 1°27'11.0" E |
| Tillaberi (Tillabéri) : | 19 262 | 239 m | 14°12'42.1" N | 1°27'11.0" E |
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