The National Address File for Statistical Purposes (CNEFE) is a nationwide database developed in 2005. This file comprises geo-referenced addresses of households and establishments in the entire country.
It is continually updated. As a whole, at each Population Census, and punctually, according to the demands from the File itself or from other IBGE surveys. The Continuous National Household Sample Survey (Continuous PNAD) and the Consumer Expenditure Survey (POF) are among those surveys.
In the CNEFE activity, addresses distributed along the entire Brazilian territory are registered both in the urban areas and in the rural ones. In these areas, the IBGE updates addresses located in regular and consolidated areas, as well as in areas of urban sprawl and of difficult access, where the registration of addresses tends to be fragile and not formalized. In addition to the data that locate the addresses in Brazil, the work consists of characterizing them according to their type, i.e., into different categories of households or establishments and according to the type of building they correspond, among other aspects.
In terms of dissemination, the CNEFE data follow the IBGE guidelines to assure the confidentiality of the statistical information. Therefore, elements that might identify informants or characterize households according to their occupation status are not released.