The archive is primarily serving municipalities of Zaječar, Boljevac and Knjaževac.

[2] The Historical Archive in Zaječar was established on April 15, 1948, following the orders of the Government and the Ministry of Education of the People's Republic of Serbia.

[3] Additionally, the archive's library, containing over 10,000 books, is recognized as a cultural asset of great importance.

[3] The Historical Archive of Zaječar publishes a professional journal and has received numerous awards, including the Order of Merit for the People with a Silver Star and the Golden Archive Award for 2006.

[3] The building that currently houses the Historical Archive was constructed in 1932, designed by local architect P. Đorđević as a residence for Milan Savić, a wealthy mine owner.