is a coastal town and a municipality in Viken county, Norway. The administrative centre of the municipality is the town of Moss. The city of Moss was established as a municipality on 1 January 1838 (see formannskapsdistrikt) and City in 1720. The rural municipality of Jeløy was merged with the city on 1 July 1943. The former municipality of Rygge was merged into it on January 1, 2020. Its administrative district covers areas east of the town, such as the island of Dillingøy in the lake Vansjø. Parts of the town are located on the peninsula of Jeløy. The city of Moss has 30,723 inhabitants (2012). Name The Old Norse form of the name was . It may be derived from an old root mer- which means to "divide" or "split". The adjacent topography shares similar etymology: , Mosse-"marsh-river-border"+ (see , , Old Norse for river). The name is thought to be very old and the meaning of it is not clear. , Mosse-"marsh-river-border"+ (Moss channel). , Mosse-"marsh-river-border"+ -"court" akin to hort(us,en), "garden," from PIE *ghr-ti-, from base *gher- "to grasp, enclose" (see yard) Actually "Moss county". History Archeological finds suggest that there were settlements in the area more than 7,000 years ago and continuously through the Iron Age, Viking Age, through to modern times. During the Viking era, the place was known as Varna (from the Old Norse , or protection) and was the site of a cooperative for battleships held by local warlords on behalf of the king. The first literary reference to the name Mo(u)ſs(ß) is from Bishop Eystein Aslaksson's Red book (NRA AM fol. 328) from 1396, and by then the town had become a commercial center with craftsmen and mills. By the 16th century, the town's port was significant enough to warrant its own customs official. Liquor distilleries became one of the dominant industries, and it was not until 1607, after the Reformation, that the town got its own church. By 1700, Moss had become a hub for both ship and land traffic between Copenhagen and Christiania, and in 1704 Moss Jernverk (Moss Ironworks) was established just north of the city center. By 1720 it received its charter as a merchant town, with its own official. This may have had background in an important battle in 1716 that was fought in the town square in Moss in which Norwegian troops commanded by Vincent Budde prevailed