The first written mention of Lomnice is from 1265 or 1281. A church consecrated to Saints John the Baptist and Vitus was mentioned here in 1407. In the 15th century, the settlement developed and in 1502, it was first referred to as a market town. Until 1570, Lomnice was ruled by the Lords of Lomnice. Lomnice was inherited by the
Zierotin family, who had rebuilt the Gothic castle from the 13th century into a Renaissance residence. In 1571, the Jewish population in Lomnice was first documented. After the manor changed hands several times in the following decades, it was bought by Count Gabriel Serényi in 1662. His son František Gabriel Serényi reorganized the economy, had completely rebuilt the castle in the Baroque style, had laid down a new planned urban concept, and had built a new large church and the town hall. The Serényi family owned Lomnice until the abolishment of
manorialism. Properties of the Serényi family were confiscated in 1945. ==Demographics==