Our aggregator FranceArchives has published the census of the French population from 1836 to 1936, creating a search engine to consult it freely accessible here:
The census was put online thanks to the project SocFace (The local face of social change : one century of French social structure seen from the ground, 1836–1936), led by the Agence national de la Recherche (ANR) and conducted by archivists, demographers, and data scientists. It conducted a OCR on manuscripts to analyse about 20 censuses. The quinquennial census of the population was introduced in France in 1836, under the leadership of the General Statistic Service of France (Institut national de la statistique et des études économiques, INSEE, from 1946), but the type and quality of the information varied over the years. FranceArchives provided some guidance on the provided data:
- name and given names from 1836 to 1936;
- villages, districts, hamlets, or street names from 1846 to 1936;
- titles, qualifications, status, occupations, or functions from 1836 to 1876;
- occupation from 1881 to 1936;
- employer or name of employer from 1901 to 1936;
- relationship to the head of household from 1881 to 1936;
- marital status (tick boxes) from 1836 to 1876;
- age in 1836, then from 1846 to 1901;
- year of birth from 1906 to 1936;
- nationality and place of birth from 1872 to 1876;
- place of birth from 1906 to 1936;
- nationality from 1886 to 1936;
- further remarks from 1836 to 1896.

