The IBGE puts out today, in its web page in the Internet, the Statistical Grid. It allows getting information from the 2010 Population Census about population (total and by sex) and about the total housing units for several spatial divisions, such as river basin regions, biomes and relief units. The grids, which divide the territory into cells of 200 x 200 m in urban areas and 1 x 1 Km in rural areas, enhance the possibilities of data analysis since they allow data to be aggregated by areas other than political-administrative units.

Combining the results of the 2010 Population census and the Statistical Grids, the IBGE makes available to users’ the following products: an interactive view and query application, available here, for the user to select any area in the screen in order to get data on population (total and by sex) and on housing units; ; interactive maps, available here, com with information about biomes, river basin regions, climate, height and relief; the Digital Atlas of Brazil 1 by 1, available here, which presents a detailed and unprecedented view of the main variables collected by the 2010 Population Census; and, finally, the digital files to be used in geoprocessing softwares that can be downloaded here. All technical information about the design methodology of the Statistical Grid can be accessed here.

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The Statistical Grid divides the Brazilian territory into more than 2.5 million cells of 200 x 200 m in the urban areas and of 1 x 1 km in the rural areas, allowing the collection of information on population (total and by sex) and on the number of households by several special units other than political-administrative ones.

By means of the Statistical Grid, it is possible to obtain data on the population in the biomes, river basin regions, relief units and climactic zones in the country. The Statistical Grid also allows the carrying out of estimates of the populations affected by any kinds of environmental or weather disasters; moreover, it can be used in simulation models of urban expansions or of land use among other technical usages. It also facilitates national and international data comparisons.

The product was developed based on numeric data from the 2010 Census micro data and from the vectoral data (spatial data) of the Census Mapping and of the National Address List for Statistical Purposes (CNEFE). The adopted geotechnologies of the 2010 Census were crucial for the development of the Statistical Grids.

Digital Atlas Brazil 1 by 1 brings unprecedented view of the 2010 Census results

The Digital Atlas Brazil 1 by 1 presents a detailed and completely new view of the main variables collected in the 2010 Population Census, with maps that portray the heterogeneity of the country. Besides personal characteristics (sex, age, color/race, literacy, birth records) and characteristics of households (typology, kind of property, sanitation, electricity, average income per capita, household heads), the Atlas presents data on the household surroundings, with information on the existence or not of address identification, street lighting, sidewalks, curbs, paving, storm drain, wheelchair ramp, trees, open sewage and trash.

The Atlas shows, for example, that the highest population density (more than 45 thousand persons in a 1 km²) of the country is in Paraisópolis, São Paulo (SP), followed by Rocinha (more than 39 thousand persons by km²) and Parque União / Nova Holanda (more than 35 thousand persons by km²), both in Rio de Janeiro (RJ).

Statistical Grid System facilitates international data crossing

The statistical grids are a way of data dissemination in small and stable (over time) geographic units. The system facilitates international and national data comparison and offers a significant detail enhancement in the urban (where the cell measures 200 x 200 m) and rural areas (1 x 1 km). It is used in Finland, Sweden, Spain, Australia and Japan.

One of the characteristics of the grid system is the time-space stability, since the areas do not depend on political-administrative divisions (municipalities, districts), which generally are subject to changes and alterations in terms of physical boundaries, due to the creation of new units, or even redefinition of borders. The units are also not subject to enumeration areas (territorial units with a dimension and number of households adequate to Census data collection), used to carry out census surveys, but which can change as population grows.

In the 1970s, the system was used for the first time in Japan, to release the statistics from several surveys for the metropolitan area of Tokyo and, since then, both government and private enterprises, carry out data collection and maintenance of regional data in this system, now encompassing the whole country. In Europe, throughout that decade, other countries, mainly those in Northern Europe, have also adopted this system, such as Finland, which has been making census data available in grids since 1970, and England, which generated a grid with data from the 1971 Census, but has not kept this production for the following years. The IBGE intends to put out the next Censuses in this format as well.