The town had a population of 8,638 in 2011, of which 4,386 lived in the urban settlement. In 1991 it was made the capital of the county for its location in the geographical centre of the Istria peninsula and in order to boost the development of its interior territories.
History
Pazin was first mentioned as Castrum Pisinum in a 983 deed regarding a donation by Emperor Otto II to the Diocese of Poreč. It then belonged to the Imperial March of Istria, which had originally been under the suzerainty of the newly established Duchy of Carinthia in 976, but separated together with the March of Carniola in 1040. In the 12th century Mitterburg Castle was in possession of the Lower Carniolan count Meinhard of Schwarzenburg, who held the office of a vogt of the Poreč bishops, and established the Pazin County. Upon his death, Pazin was inherited by his son-in-law Count Engelbert III of Gorizia in 1186. The Istrian contract was written in 1325 in the Croatian language and in the Glagolitic script. While most of Istria had gradually been annexed by Venice, Engelbert's descendant Count Albert III of Gorizia in 1374 bequested his Mitterburg estates to the Austrian House of Habsburg, who attached them to their Duchy of Carniola and gave it out in fief to various families, the last of which was the comital House ofMontecuccoli from 1766. Until 1918, the town was part of the Austrian monarchy, seat of the district of the same name, one of the 11 Bezirkshauptmannschaften in the Austrian Littoral province. In the same year, Pazin and all the Peninsula of Istria were transferred to the Kingdom of Italy. Benito Mussolini, then, introduced a fascist regime in Italy which, under the "Duce", began to Italianize the region. There were already many speakers of Italian and Istro-veneto in Pazin. In fact, Pazin was a very multicultural and multilingual city due to its location. Most of Istria became part of Yugoslavia after World War II with the Treaty of Paris in 1947. In September 1943, Pazin was attacked and bombarded by Yugoslav Partisans, and subsequently became part of modern day Croatia.
Climate in this area has high diurnal variations, and there is adequate rainfall year-round. The Köppen Climate Classification subtype for this climate is ""..