Until 1960, Rio de Janeiro city was the Brazilian capital and was not part of Rio de Janeiro state. In 1960, with the inauguration of Brasília as the new capital of Brazil, the city of Rio de Janeiro became the new Guanabara state. Only in 1975 the states of Rio de Janeiro and Guanabara fused forming present day's Rio de Janeiro state, but the Campeonato Fluminense continued separately until 1978, after which all its clubs joined the city league, the Campeonato Carioca.
As most of the big clubs in the Campeonato Carioca have come from Rio de Janeiro city, the countryside clubs have rarely contended for the state title since the merger; only two countryside clubs, Americano and Volta Redonda, came close to winning the Carioca title, settling for runner-up in 2002 and 2005 respectively.
The first Campeonato Fluminense was disputed in 1915, right after the foundation of LSF (the first state football association). In 1928 the clubs were replaced by city XI teams, and the champion league represented the state. From 1941 to 1945 FFD (former AFEA) replaced the city XI teams by clubs. In 1946 the clubs were again replaced by city XI teams. These were the state champions clubs in the amateur era:
In 1951, FFD (Federação Fluminense de Desportos) formed a professional department (the D.E.P.), which carried out the first professional club state championship. Since then the state championship was disputed by the professional champions of each region. From 1959 on, the Fluminense champions had berths in the Taça Brasil, but neither the later Roberto Gomes Pedrosa tournament and its successor, the Campeonato Brasileiro, awarded berths to the Fluminense champions.
In 1975, although the Rio de Janeiro and Guanabara states had already fused, the federations were still separate. The FFD organized the Countryside State Championship:
In 1978 the federations merged into the new FERJ. However, on this year FERJ still organized a Countryside Championship, considered the last Campeonato Fluminense: