| Département du Kouilou | Hinda | 13,650 | 74,870 | 91,955 | 84,165 |
| Hinda | | | | 32,995 | |
| Kakamoéka | | | | 7,817 | |
| Madingo Kayes | | | | 13,290 | |
| Mvouti | | | | 18,094 | |
| Nzambi | | | | 3,137 | |
| Tchiamba-Nzassi | | | | 16,622 | |
| Département du Niari | Dolisie | 25,942 | 110,003 | 231,271 | 255,120 |
| Banda | | | | 6,910 | |
| Divenie | | | | 13,549 | |
| (Auton.) Commune de Dolisie | | 18 | | 83,798 | 128,032 |
| Arrondissement 1 | | | | 49,170 | |
| Arrondissement 2 | | | | 34,628 | |
| Kibangou | | | | 17,928 | |
| Kimongo | | | | 19,578 | |
| Londéla Kayes | | | | 8,150 | |
| Louvakou | | | | 13,408 | |
| Makabana | | | | 14,164 | |
| Mayoko | | | | 5,147 | |
| Mbinda | | | | 4,783 | |
| (Auton.) Commune de Mossendjo | | 5 | | 13,238 | 19,263 |
| Arrondissement 1: Bouali | | | | 5,978 | |
| Arrondissement 2: Itsibou | | | | 7,260 | |
| Moungoundou Nord | | | | 1,385 | |
| Moungoundou Sud | | | | 5,703 | |
| Moutamba | | | | 10,385 | |
| Nyanga | | | | 9,340 | |
| Yaya | | | | 3,805 | |
| Département de la Lékoumou | Sibiti | 20,950 | 68,287 | 96,393 | 85,617 |
| Bambama | | | | 4,906 | |
| Komono | | | | 14,581 | |
| Mayéyé | | | | 13,649 | |
| Sibiti | | | | 46,608 | |
| Zanaga | | | | 16,649 | |
| Département de la Bouenza | Madingou | 12,265 | 150,603 | 309,073 | 319,570 |
| (Auton.) Commune de Nkayi | | 8 | | 71,620 | 63,104 |
| Arrondissement 1: Mouana nto | | | | 30,389 | |
| Arrondissement 2: Soulaka | | | | 41,231 | |
| Madingou | | | | 62,800 | |
| Mouyondzi | | | | 36,815 | |
| Boko-Songho | | | | 12,575 | |
| Mfouati | | | | 29,931 | |
| Loudima | | | | 32,775 | |
| Kayes | | | | 13,123 | |
| Kingoué | | | | 11,910 | |
| Mabombo | | | | 11,839 | |
| Tsiaki | | | | 11,315 | |
| Yamba | | | | 14,370 | |
| Département du Pool | Kinkala | 33,955 | 184,263 | 236,595 | 436,786 |
| Boko | | | | 13,643 | |
| Goma Tsé-Tsé | | | | 15,615 | |
| Ignié | | | | 29,290 | |
| Kimba | | | | 4,516 | |
| Kindamba | | | | 17,295 | |
| Kinkala | | | | 34,608 | |
| Louingui | | | | 10,553 | |
| Loumo | | | | 4,715 | |
| Mayama | | | | 7,036 | |
| Mbanza-Ndounga | | | | 9,737 | |
| Mindouli | | | | 53,584 | |
| Ngabé | | | | 30,091 | |
| Vindza | | | | 5,912 | |
| Département des Plateaux | Djambala | 38,400 | 109,663 | 174,591 | 192,596 |
| Abala | | | | 11,296 | |
| Allembé | | | | 4,640 | |
| Djambala | | | | 17,265 | |
| Gamboma | | | | 43,221 | |
| Lékana | | | | 16,761 | |
| Makotimpoko | | | | 18,756 | |
| Mbon | | | | 3,163 | |
| Mpouya | | | | 9,283 | |
| Ngo | | | | 16,751 | |
| Ollombo | | | | 21,272 | |
| Ongogni | | | | 12,183 | |
| Département de la Cuvette | Owando | 48,250 | 93,063 | 156,044 | 152,433 |
| Boundji | | | | 16,015 | |
| Loukoléla | | | | 21,442 | |
| Makoua | | | | 21,910 | |
| Mossaka | | | | 25,636 | |
| Ngoko | | | | 2,866 | |
| Ntokou | | | | 4,075 | |
| Owando | | | | 40,174 | |
| Oyo | | | | 17,948 | |
| Tchikapika | | | | 5,978 | |
| Département de la Cuvette-Ouest | Ewo | 26,600 | 42,681 | 72,999 | 59,728 |
| Etoumbi | | | | 12,387 | |
| Ewo | | | | 20,195 | |
| Kellé | | | | 15,205 | |
| Mbama | | | | 8,040 | |
| Mbomo | | | | 7,163 | |
| Okoyo | | | | 10,009 | |
| Département de la Sangha | Ouesso | 55,800 | 34,213 | 85,738 | 81,326 |
| Mokéko | | | | 30,172 | |
| Ngbala | | | | 4,613 | |
| (Auton.) Commune de Ouesso | | 5 | | 28,179 | 28,939 |
| Arrondissement 1: Nzalangoye | | | | 14,620 | |
| Arrondissement 2: Mbindzo | | | | 13,559 | |
| Pikounda | | | | 3,513 | |
| Sembé | | | | 9,550 | |
| Souanké | | | | 9,711 | |
| Département de la Likouala | Impfondo | 66,044 | 49,505 | 154,115 | 97,206 |
| Bétou | | | | 29,736 | |
| Bouanéla | | | | 7,084 | |
| Dongou | | | | 19,365 | |
| Enyellé | | | | 21,193 | |
| Epéna | | | | 17,499 | |
| Impfondo | | | | 47,951 | |
| Liranga | | | | 11,287 | |
| Commune de Brazzaville | - | 100 | 585,812 | 1,373,382 | 1,408,150 |
| Arrondissement 1: Makélékélé | | | | 298,292 | |
| Arrondissement 2: Bacongo | | | | 98,782 | |
| Arrondissement 3: Poto-Poto | | | | 93,106 | |
| Arrondissement 4: Moungali | | | | 166,719 | |
| Arrondissement 5: Ouénzé | | | | 182,057 | |
| Arrondissement 6: Talangaï | | | | 337,986 | |
| Arrondissement 7: Mfilou | | | | 196,440 | |
| Commune de Pointe-Noire | - | 44 | 294,203 | 715,334 | 829,134 |
| Arrondissement 1: Lumumba | | | | 109,456 | |
| Arrondissement 2: Mvoumvou | | | | 87,696 | |
| Arrondissement 3: Tié-Tié | | | | 257,255 | |
| Arrondissement 4: Loandjili | | | | 260,927 | |
| total | | 342,000 | 2,694,200 | 3,697,490 | 4,001,831 |