The Central Bohemia Region has the youngest population of the regions in Czechia with 41.5 years, according to data released by the Czech Statistical Office (CSU). It is followed by Prague with 42.3 years. By contrast, the Zlin, Hradec Kralove and Karlovy Vary regions have the oldest populations, with the average of 43.6 years in all of them. In the past nine years, the average age increased in all Czech regions, the least, by 0.4 years, in Prague.