Demographics of a country
Czechoslovakia had a peak population of 15.6 million, mainly composed of Czechs, Slovaks, Hungarians, Romani people, Silesians, Ruthenians, Ukrainians, Germans, Poles and Jews. The ethnic composition of Czechoslovakia changed over time from Sudeten Germans being the most prominent ethnicity to Czechs and Slovaks making up two-thirds of the demographic. Amongst this demographic there was also a diverse range of religions with Roman Catholic being the most prominent. This population has been found to have had an increasing growth rate that had a declining trajectory. The population density was approximately 121 persons per square kilometre with the highest population density being in Moravia of 154 persons per square kilometre.