Pazin County in Istria first appeared in the 14th century as a separate administrative unit within the Austrian estates. It saw its greatest development in the period when the area was governed by the Counts of Gorizia. It remained a separate unit till the French occupation in the 19th century. The historical records about Pazin County can be divided into the period before the end of the WWII, and the post-war period. In the earlier period, research into the history of Pazin County was mainly conducted by Istro-Italian authors. They focused on political and administrative issues. In that time, the Documented history of Pazin County monograph was written by Camillo de Franceschi. It discusses the political, administrative, social, economic, colonial, religious and cultural history of the land and has remained one of the fundamental works to this day. After the WWII, the circle of researchers spread. The studies conducted by several Croatian and Slovene authors appeared, showing more variety in topic than before. Numerous sources were being published but the research was largely influenced by the personal preferences and interests of individual authors. There was little systématisation as to categorising and publishing historical sources. Consequently, there is still no holistic and modern historical synthesis describing the County. In the future more attention should therefore be given to the sources and their selective publishing.