The database of the population of Poznań is the information system created thanks to the following projects:

Nauka dla Społeczeństwa, Opus 21 i Preludium Bis 2.

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The system collects and stores individual entries on births, marriages and deaths of inhabitants of the city of Poznań for the years of 1830-1900. The data were collected from the registers of Catholic and Protestant parishes and from the books of the city registrar office.

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In total, the data were collected on 157,671 births, 17,832 marriages and 87,261 deaths in Poznań in the years 1830-1900, resulting in 262,764 individual pieces of information on the inhabitants of Poznań.