The first edition of Hamar Arbeiderblad was published on 30 March 1925 with a print run of 1200 copies.
Local branches of the Labour Party in Hamar, Vang, Stange, Romedal, Løten, Ringsaker and Nes were behind the founding of the newspaper.
A new period of investment started in 1985, which meant that new equipment and a new production site came on stream in May 1987.
Starting in January 1998 the paper began a gradual change to tabloid format, a process which was completed by 12 April 1991.
The paper published a 20-page supplement when HamKam was promoted to the Norwegian Premier League in 2003.
The board was fired and Hoff (the editor) was informed by telegramme from the Police Department that he was no longer allowed to work at the paper.
On 25 September 1941 the paper was instructed to comment on the fact that it had been one year since Josef Terboven, Reichskommissar of Norway had named members of the Council of State, but Røst did not write what the Germans had been expecting.
The paper was merged with Hamar Stiftstidende in 1943, a plan which had originally been mooted by the Department of Culture and People's Information in 1940.
On 1 July the Press Directorate stopped publication of both newspapers and started a paper called Dagbladet Hedmark in their place.