The number of inhabitants in Prague in the middle of the 18th century grew slightly, despite the slight decline in the natural population change. This increase, like in the majority of European towns, occurred as a result of immigration. This is confirmed in an analysis of registers of the deceased in the parish of the Holy Cross in the Old Town in Prague for the years 1748-1762. In these years only one in three people who died in the parish and were over the age of 15 were actually from Prague. Among children aged 15 and under, 87 % were bom in Prague. Mainly adults migrated to Prague, usually while they were single, but there are also families with children among the newcomers. In fact almost 8 % of infant children of the deceased were baptised outside Prague. The immigrants headed to Prague not only from other parts of Bohemia (from the Czech and German speaking parts) but also from neighbouring lands (mainly Austria and Moravia).The population of Prague was relatively highly mobile within the city limits. Among the people buried in the parish over the age of 15, who came from all four Prague towns, only one-quarter had been baptised in the parish under observation. In the Old Town (i.e. including other parishes) the figure was 65 %. In this case it was evident that within the city even families with children moved (20 % of infants that died in the parish were baptised in another parish).