According to archaeologists the Białogard stronghold was built in the fork of the Parsęta and Leśnica Rivers as early as the 8th century. In the 10th century it was an important centre of long-range international trade at the crossroads of two important trade routes: a north–south "salt route" from Kołobrzeg to Poznań and Greater Poland, and the west-east Pomeranian route from Szczecin to Gdańsk.
Pomerania was inhabited by several tribes collectively known as Pomeranians, and Białogard was probably the centre of one of them. In the 10th century Pomerania was conquered by Polish duke Mieszko I and included within the emerging Polish state. His son, Duke Bolesław the Brave established a bishopric in nearby Kołobrzeg in 1000, and introduced Christianity.
Białogard is first mentioned in the chronicle of Gallus Anonymous as a rich and populous stronghold in the middle of Pomerania, a famous royal city called white (Alba Regia). This city was conquered by Boleslaus III of Poland in 1107. By the invitation of Bolesław III the Wrymouth and his vassal Wartisław I of Pomerania, Bishop Otto of Bamberg came with a mission to Pomerania in 1124; Białogard was one of the places he visited. In the 12th century Białogard was a seat of a regional governor (castellan).
Kashubia[5] was the name of the region around this town. The town developed quickly as one of the more important economic centres of the Duchy of Pomerania, and this was strengthened by the Lübeck law granted to the city by Duke Bogusław IV in 1299. In 1307 the city was granted staple rights.[6] In 1386 it became a member of the Hanseatic League.[6] In the 15th century there were disputes with the nearby town of Świdwin, and in 1469 even a battle was fought between the towns.[6] On the 500-year anniversary of the battle, on the initiative of Polish writer and publisher Leon Zdanowicz [pl], in post-World War II Poland, a medieval-style competition was organized between the inhabitants of both towns. As a local tradition, these competitions have been organized annually since.[6] As a result of the feudal fragmentation of Pomerania, Białogard was part of Pomerania-Wolgast from 1295 and Pomerania-Stolp (Duchy of Słupsk), a vassal state of the Polish Crown, from 1368. Duke Wartislaw IV chose the town as his main place of residence in 1315.[6] Pomerania was united under Duke Bogislaw X in 1478, after 1569 the town was part of the Pomerania-Stettin, and later was again in the united Duchy of Pomerania under Bogislaw XIV, the last Pomeranian duke.
Crafts and trade flourished.[6] In 1534 a bakers' guild was founded, in 1580 also woodcarvers' and clothiers' guilds were established.[6] Following the Protestant Reformation, the town became Protestant in 1534. During the Thirty Years' War the town was plundered by the troops of the Holy Roman Empire and Sweden.[6] After the death of the last Pomeranian Duke in 1637, and as a result of the Thirty Years' War, the Duchy of Pomerania was divided between Sweden and Brandenburg-Prussia. As Belgard, with all of Farther Pomerania, the town became part of Brandenburg in 1653[6] and became part of the Kingdom of Prussia in 1701. In 1724 Belgard was made the capital of a county in the Province of Pomerania, and after the administrative reorganization in 1815, the capital of Landkreis Belgard (Belgard county).
The first post office in Belgard was opened in 1825. In 1858 the first railroad connecting Belgard to Köslin (Koszalin) and Schivelbein (Świdwin) was completed; it was extended to Stargard and Neustettin (Szczecinek) in 1878. Belgard became part of the German Empire in 1871.
Since the medieval Christianization of the area, the majority of the population was composed of Catholics. After the Reformation, the town's inhabitants were predominantly Protestant, particularly Lutheran. Since the end of the war the majority of the town's population is composed of Catholics, though a significant Lutheran minority remains.
^Kaszuba, Sylwia. "Marsz 1945". In Grudziecka, Beata (ed.). Stalag XX B: historia nieopowiedziana (in Polish). Malbork: Muzeum Miasta Malborka. pp. 102, 109. ISBN978-83-950992-2-9.
^"Miasta partnerskie". bialogard.info (in Polish). Miasto Białogard. Retrieved 2022-09-06.