In the 13th century the local parish community was established, including the nearby villages of Rytel, Łąg, Mokre, Malachin.

In 1454, King Casimir IV Jagiellon reincorporated Czersk to the Kingdom of Poland, and then the Teutonic Knights renounced any claims in the peace treaty of 1466.

One of the main escape routes for insurgents of the unsuccessful Polish November Uprising from partitioned Poland to the Great Emigration led through the town.

[3] Second lieutenant and then budding poet Wincenty Pol, who led one of the columns, commemorated their stay in the town and the reception of the insurgents by local Poles with the poem "Nocleg w Czersku.

"[3] In 1873, the railroad between Berlin and Königsberg was opened, passing through Czersk; first major commercial economical development.

[4] Faced with threats of German retaliation, the Poles took control of Czersk, after which a battle for the settlement was fought.

[4] On January 29, 1920, Polish troops led by General Józef Haller entered Czersk, and it was reintegrated with Poland.

In 1940 and 1942, the occupiers carried out expulsions of Poles, who were deported either to the General Government in the more-eastern part of German-occupied Poland or to forced labour in Germany.

The Soviets carried out deportations to forced labor camps in the Ural Mountains and Soviet-occupied Latvia, where some 150 residents of the town and its environs died between 1945 and 1956.