Rio de Janeiro is a federative unit of Brazil.
Boundaries: Instituto Brasileiro de Geografia e Estatística (IBGE), OCHA ROLAC (https://data.humdata.org/dataset/brazil-administrative-level-0-boundaries) via geoBoundaries, CC BY 3.0 IGO (https://creativecommons.org/licenses/by/3.0/igo/); boundaries modified; Natural Earth (naturalearthdata.com), public domain
| Angra dos Reis | Angra dos Reis | 169 k |
| Aperibé | no seat recorded | 10 k |
| Araruama | no seat recorded | 112 k |
| Areal | no seat recorded | 11 k |
| Armação dos Búzios | no seat recorded | 28 k |
| Arraial do Cabo | no seat recorded | 28 k |
| Barra do Piraí | no seat recorded | 95 k |
| Barra Mansa | no seat recorded | 178 k |
| Belford Roxo | no seat recorded | 469 k |
| Bom Jardim | no seat recorded | 25 k |
| Bom Jesus do Itabapoana | no seat recorded | 35 k |
| Cabo Frio | no seat recorded | 186 k |
| Cachoeiras de Macacu | no seat recorded | 54 k |
| Cambuci | no seat recorded | 15 k |
| Campos dos Goytacazes | Campos dos Goytacazes | 464 k |
| Cantagalo | no seat recorded | 20 k |
| Carapebus | no seat recorded | 13 k |
| Cardoso Moreira | no seat recorded | 13 k |
| Carmo | no seat recorded | 17 k |
| Casimiro de Abreu | no seat recorded | 35 k |
| Comendador Levy Gasparian | no seat recorded | 8 k |
| Conceição de Macabu | no seat recorded | 21 k |
| Cordeiro | no seat recorded | 20 k |
| Duas Barras | no seat recorded | 11 k |
| Duque de Caxias | no seat recorded | 855 k |
| Engenheiro Paulo de Frontin | no seat recorded | 13 k |
| Guapimirim | no seat recorded | 51 k |
| Iguaba Grande | no seat recorded | 23 k |
| Itaboraí | no seat recorded | 218 k |
| Itaguaí | no seat recorded | 109 k |
| Italva | no seat recorded | 14 k |
| Itaocara | no seat recorded | 23 k |
| Itaperuna | no seat recorded | 96 k |
| Itatiaia | no seat recorded | 29 k |
| Japeri | no seat recorded | 95 k |
| Laje do Muriaé | no seat recorded | 7 k |
| Macaé | no seat recorded | 207 k |
| Macuco | no seat recorded | 5 k |
| Magé | no seat recorded | 228 k |
| Mangaratiba | no seat recorded | 36 k |
| Maricá | Maricá | 128 k |
| Mendes | no seat recorded | 18 k |
| Mesquita | no seat recorded | 168 k |
| Miguel Pereira | no seat recorded | 25 k |
| Miracema | no seat recorded | 27 k |
| Natividade | no seat recorded | 15 k |
| Nilópolis | no seat recorded | 157 k |
| Niterói | no seat recorded | 487 k |
| Nova Friburgo | Nova Friburgo | 182 k |
| Nova Iguaçu | Nova Iguaçu | 795 k |
| Paracambi | no seat recorded | 47 k |
| Paraíba do Sul | no seat recorded | 41 k |
| Paraty | no seat recorded | 38 k |
| Paty do Alferes | no seat recorded | 26 k |
| Petrópolis | no seat recorded | 296 k |
| Pinheiral | no seat recorded | 23 k |
| Piraí | no seat recorded | 26 k |
| Porciúncula | no seat recorded | 18 k |
| Porto Real | no seat recorded | 17 k |
| Quatis | no seat recorded | 13 k |
| Queimados | no seat recorded | 138 k |
| Quissamã | no seat recorded | 20 k |
| Resende | no seat recorded | 120 k |
| Rio Bonito | no seat recorded | 56 k |
| Rio Claro | no seat recorded | 17 k |
| Rio das Flores | no seat recorded | 9 k |
| Rio das Ostras | no seat recorded | 106 k |
| Rio de Janeiro | Rio de Janeiro | 6.3 M · 33 subdistricts |
| Santa Maria Madalena | no seat recorded | 10 k |
| Santo Antônio de Pádua | no seat recorded | 41 k |
| São Fidélis | no seat recorded | 38 k |
| São Francisco de Itabapoana | São Francisco de Itabapoana | 41 k |
| São Gonçalo | São Gonçalo | 1000 k |
| São João da Barra | no seat recorded | 33 k |
| São João de Meriti | no seat recorded | 459 k |
| São José de Ubá | no seat recorded | 7 k |
| São José do Vale do Rio Preto | no seat recorded | 20 k |
| São Pedro da Aldeia | no seat recorded | 88 k |
| São Sebastião do Alto | no seat recorded | 9 k |
| Sapucaia | no seat recorded | 18 k |
| Saquarema | no seat recorded | 74 k |
| Seropédica | no seat recorded | 78 k |
| Silva Jardim | no seat recorded | 21 k |
| Sumidouro | no seat recorded | 15 k |
| Tanguá | no seat recorded | 31 k |
| Teresópolis | no seat recorded | 164 k |
| Trajano de Moraes | no seat recorded | 10 k |
| Três Rios | no seat recorded | 78 k |
| Valença | no seat recorded | 72 k |
| Varre-Sai | no seat recorded | 10 k |
| Vassouras | no seat recorded | 34 k |
| Volta Redonda | no seat recorded | 258 k |
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