The village was mentioned under the Latinized name Ricosino in documents from the 12th century when it was part of fragmented medieval Poland.[2] In the past it also appeared under the Old Polish names Rokoczyn, Rykosyn, Rokosin.[2][3] Coins of 9th-century ruler Æthelberht, King of Wessex were found in the village in the 19th century.[2] Rokocin was a royal village of the Polish Crown, administratively located in the Tczew County in the Pomeranian Voivodeship.[3]