Abstract: From General Census to Renoved Census of the Population towards a damage of its contribution at the geographical research. The French Statistics Department (INSEE) has begun a drastic revision of the procedures for collecting census data. Henceforth, data collection will take place over a period of five years, on a rotational basis. The French « communes » will be divided into two groups, each accounting for about half the French population. In the small commune group, 1/5 of data collection will take place each year. In the large commune group, 1/5 of the buildings will be surveyed each year but within these buildings only 40 % of the households and their occupants will be included. This article analyses the consequences of the d...