The club was formed in 1992 through a merger of Dagenham and Redbridge Forest, the latter merged from Ilford, Leytonstone and Walthamstow Avenue. The club's traditional colours are red and blue, to represent the merged teams. The club replaced Redbridge Forest in the Football Conference but were relegated in 1996. They won the Isthmian League title in 1999–2000 and qualified for the next three Conference play-offs, missing out on the 2001–02 title on goal difference and losing the 2003 Conference play-off final. They secured promotion into the Football League after winning the Conference title in the 2006–07 season. They then moved up from League Two after winning the 2010 play-off final, though were relegated the next season after finishing 21st in League One. Dagenham were relegated back into non-League football in 2016.