Slavic Lechitic settlements were established in present-day districts of Ciechocino and Pieleszewo in the Early Middle Ages.

The area was re-incorporated to the Kingdom of Poland in 1454 by King Casimir IV Jagiellon, and after the subsequent Thirteen Years' War the Teutonic Knights renounced any claims in 1466.

In 1768 Ernest Konopacki obtained permission from the King of Poland Stanisław August Poniatowski to build a brass products factory.

[2] During the invasion of Poland, which started World War II, the Germans captured Reda on September 9, 1939.

In 1967, when Reda was inhabited by 5,400 people, it was granted town rights, and after growth began to accelerate in 1982, its population had more than tripled to above 17,000 residents by 1999.