According to the censuses conducted in 1880, 1890, 1900 and 1910 the population of the municipality grew from 766 in 1880 to 1,053 in 1910. In terms of the language spoken colloquially the majority were Polish-speakers (between 99.4% and 98.4%), accompanied by German-speakers (at most 40 or 5.2% in 1880) and Czech-speakers (at most 5 or 0.5% in 1910). In terms of religion, in 1910 the majority were Roman Catholics (98.7%), followed by Protestants (14 or 1.3%).[7] The village was also traditionally inhabited by Silesian Lachs, speaking Cieszyn Silesian dialect.
In the past a Renaissance château was located in Ráj. It was built in 1563-1570 together with the surrounding park. In the 1750s the château was reconstructed to the Baroque style and remained so until its destruction. In 1899 the château was bought by the local wealthy Larisch-Mönnich family, who owned it until 1945. After World War II it was confiscated, and after Communist takeover of power in Czechoslovakia it passed to the coal company, who used it as the dormitory for miners. In 1955 a hospital was relocated there. The château dilapidated quickly and the hospital was forced to leave the building in 1968. Communist authorities neglected the landmark and finally it was demolished in 1980.
^Mrózek, Robert (1984). Nazwy miejscowe dawnego Śląska Cieszyńskiego [Local names of former Cieszyn Silesia] (in Polish). Katowice: Uniwersytet Śląski w Katowicach. p. 150. ISSN0208-6336.
^Panic, Idzi (2010). Śląsk Cieszyński w średniowieczu (do 1528) [Cieszyn Silesia in Middle Ages (until 1528)] (in Polish). Cieszyn: Starostwo Powiatowe w Cieszynie. pp. 297–299. ISBN978-83-926929-3-5.
^Panic, Idzi (2010). Śląsk Cieszyński w średniowieczu (do 1528) [Cieszyn Silesia in the Middle Ages (until 1528)] (in Polish). Cieszyn: Starostwo Powiatowe w Cieszynie. pp. 289, 295. ISBN978-83-926929-3-5.