| Name | Population | Altitude | Latitude | Longitude | 
| Tandjile (Tandjilé) : | 616 362 | 381 m | 9°19'0.0" N | 16°6'0.0" E | 
| Moundou : | 135 167 | 414 m | 8°34'0.0" N | 16°4'59.9" E | 
| Sarh : | 102 528 | 342 m | 9°9'0.0" N | 18°22'59.9" E | 
| Abeche (Abéché) : | 74 188 | 543 m | 13°49'0.1" N | 20°49'0.1" E | 
| Kelo (Kélo) : | 42 533 | 428 m | 9°19'0.0" N | 15°48'0.0" E | 
| Koumra : | 36 263 | 415 m | 8°55'0.0" N | 17°33'0.0" E | 
| Pala : | 35 466 | 456 m | 9°20'60.0" N | 14°58'0.1" E | 
| Am Timan : | 28 885 | 416 m | 11°1'59.9" N | 20°16'59.9" E | 
| Bongor : | 27 770 | 319 m | 10°16'50.2" N | 15°22'19.9" E | 
| Mongo : | 27 763 | 398 m | 12°10'59.9" N | 18°41'60.0" E | 
| Doba : | 24 336 | 398 m | 8°39'0.0" N | 16°51'0.0" E | 
| Ati : | 24 074 | 295 m | 13°13'0.1" N | 18°19'59.9" E | 
| Lai (Laï) : | 19 382 | 362 m | 9°24'0.0" N | 16°18'0.0" E | 
| Oum Hadjer : | 19 271 | 354 m | 13°18'0.0" N | 19°40'59.9" E | 
| Bitkine : | 18 495 | 653 m | 11°58'54.1" N | 18°12'46.1" E | 
| Mao : | 18 031 | 352 m | 14°7'9.8" N | 15°18'47.9" E | 
| Massaguet : | 17 906 | 289 m | 12°28'27.1" N | 15°26'34.1" E | 
| Ndourbali : | 17 682 | 305 m | 11°48'33.8" N | 15°51'40.0" E | 
| Mboursou Lere (Mboursou Léré) : | 17 132 | 305 m | 9°46'0.0" N | 14°9'0.0" E | 
| Kyabe (Kyabé) : | 16 177 | 367 m | 9°26'60.0" N | 18°56'60.0" E | 
| Benoye (Bénoye) : | 15 717 | 446 m | 8°58'60.0" N | 16°19'0.1" E | 
| Massakory : | 15 406 | 259 m | 12°59'53.2" N | 15°44'15.0" E | 
| Moussoro : | 15 190 | 293 m | 13°38'33.0" N | 16°29'20.0" E | 
| Bokoro : | 14 723 | 296 m | 12°22'36.1" N | 17°3'29.2" E | 
| Bere (Béré) : | 14 666 | 383 m | 9°19'60.0" N | 16°8'60.0" E | 
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