Middle Ages West of Petrinja is
Petrova gora (Peter's mountain), site of the 1097
Battle of Gvozd Mountain between King
Petar Snačić of Croatia and
Coloman of
Hungary. The first written record of Petrinja as an inhabited settlement is the one about the benefits awarded to the inhabitants of Petrinja by the
Slavonian duke
Koloman in 1240. This old medieval Petrinja belongs to the time of warring with the
Ottoman Empire.
16th and 17th centuries The old fortress was abandoned and destroyed in 1543, to prevent it from coming under Ottoman control. In 1592, Petrinja was given a new location with the construction and building of an Ottoman fortress at the confluence of the Petrinjčica and Kupa rivers. The fortress was to serve the Ottomans in their offensives in central Croatia, such as the 1593
battle of Sisak. On August 10, 1594, the fortress was first liberated by the Croatian army. Therefore, August 10 has become the day of gratitude towards God and St. Lawrence, and this saint has been chosen for the patron saint of the parish and the town of Petrinja. Over time, Petrinja attracted craftsmen and merchants whose arrival marks the beginning of the town's development. In the year 1773, Austrian empress Maria Theresa decided that Petrinja was to be a craft guild center for the entire territory of the
Military Frontier.
18th and 19th centuries Petrinja was part of
Napoleon's
Illyria from 1809 till 1813 when the town became a significant trade and traffic center. In the same period, the
French army planted the linden trees that stand to this day. The influence of Croatian national revival in the 19th century was felt in Petrinja. That was the time of the founding of the Town Orchestra (1808), Music Department (1841), Library and reading-room (1842), Teachers' Training School (1862), Croatian Choir "Slavulj" (1864), Town fire-brigade (1880), First printing-house (1881). In the late 19th and early 20th century, Petrinja was a district capital in the
Zagreb County of the
Kingdom of Croatia-Slavonia.
20th and 21st centuries From 1929 to 1939, Petrinja was part of the
Sava Banovina and from 1939 to 1941 of the
Banovina of Croatia within the
Kingdom of Yugoslavia. During the Second World War, with the establishment of the so-called
Independent State of Croatia (a fascist puppet state), Petrinja and the surrounding area were the scene of persecution of the Serbian, Jewish and Roma minorities, but also of harsh repression of many Croatian anti-fascists, in a context of armed struggle between
partisans and
local collaborators of the Axis forces. Recent history has witnessed the war in Croatia during which many people (Croats first, then the Serbs in 1995) were exiled from their hometown of Petrinja in the period from September 1991 to August 1995. The town itself has gone through severe damage. On November 25, 1991, the Serb mayor of Petrinja Radovan Marković sent a message to
Željko Ražnatović to have his troops enter the city as part of a "2. motorized battalion" of the 622. Motorized Brigade of the then already Serbian-dominated
Yugoslav People's Army. During the occupation of Petrinja and surrounding areas, from September 1991 until August 1995, Serb forces committed numerous
mass killings against Croat and other non-Serb civilians and POWs. More than 250 Croat and other non-Serb civilians and POWs were murdered during this period. After Operation Storm in August 1995, Croatian authorities were able to find and exhume 45 mass graves. After
Operation Storm in 1995, many monuments have been erected in memory of Croatian war heroes and victims of the war. In reconstructing and rebuilding their town, the inhabitants of Petrinja took great care of the town's urban tradition by keeping the old customs alive, celebrating Catholic holidays, and organizing numerous cultural, social and sports events. On 29 December 2020, the town was struck by a
violent earthquake of magnitude 6.4 , killing seven people, including a seven-year-old girl. Half of the town was destroyed during the quake. At least 20 people were injured. A series of aftershocks continued to jolt the area, with 291 smaller tremors recorded during the subsequent days. ==Economy==