Marco Geoestadístico Nacional (MGN)
The National Geostatistical Framework (Marco Geoestadístico Nacional in Spanish) consists of geostatistical areas divided into three disaggregation areas.
- State Geostatistical Areas (AGEE)
- Municipal Geostatistical Areas (AGEM)
- Basic Geostatistical Areas (AGEB)
- Rural Basic Geostatistical Areas
- Urban Basic Geostatistical Areas
Within these levels of disaggregation, are the geographical areas containing the minimum observation units of the Population and Housing Census of 2010 (settlers and settlements) which are:
The geostatistical boundaries are conventional boundaries exclusive of the National Geostatistical Framework, which delimit the territory in geostatistical areas which adhere when possible to the political-administrative boundaries.
It's important to note that the state and municipal boundaries in the current geostatistical cartography are being adjusted to the political-administrative boundaries, however most of them are geostatistical boundaries, that means they are usually delineated over natural and cultural physical features,d these being permanent and readily identifiable in the field; and sometimes when they do not exist in the field, mainly in urban areas, the limits of AGEB and peripheral blocks are plotted using visuals.
- Natural physical features: rivers, streams, canyons, hills, and so on.
- Cultural Physical features: avenues, streets, walkways, roads (highways, dirt paths and gaps), electric, telephone telegraphic lines, pipelines and so on.
- Visual: Visual: imaginary line joining two identifiable fixed points on the ground.
- Coastal limits will not be marked with geostatistics symbology, but will be indicated with a solid line, following the contour of the coast.
Code assignation within the National Geostatistical Framework
The identity of each area of the National Geostatistical Framework is unique and is expressed with numerical codes that allow us to identify with a geostatistical reference whether an entity it's at the state, municipal, AGEB, locality or block level.
Such reference is composed by an ordered series of geostatistical codes compliant with a structure based on the level of disaggregation of the geostatistical areas referenced and it does not repeat throughout the country; the order of these codes is as defined as follows:
|Full or concatenated key with from State down to block|
|For Urban Areas||For Rural Areas|
|EE = State (represented with two digits 00).|
|MMM = Municipality (represented with three digits 000).|
|LLLL = Locality (represented with four digits 0000).|
|AAA-A = AGEB (represented with three digits a dash and a verifier digit 000-0).|
|NNN = Block (represented with three digits 000).|
MGN Admin levels and OSM
Given the widespread use of the geostatistical levels defined in the MGN and their compatibility with the official administrative levels in Mexico, it's of primary importance to keep the definitions of such levels compatible with OSM admin levels. MGN data is not only used for statistical purposes, it's heavily used for research, both at national and international investigations, urban policy, natural resources, environmental policy, disaster response and routing among other uses. The MGN is also used to keep the geographic data referenced with a permanent key (or code) so that any updates to the datasets released by the INEGI could be easily referenced by that same key no matter the government entity that generates the data, thus making a really important objective that of keeping consistency between MGN and OSM datasets through the inclusion of MGN Keys in any import project.
An additional benefit of the use of the MGN within OSM is that all government entities that release geographic data in Mexico are required by law to release that data MGN geo-referenced. This is a legal framework that empowers the OSM community greatly since cross-referencing OSM and government issued data (not only INEGI's) will be easier, not only for research purposes but for actionable street level information such as disaster response, environmental protection and so on.
The latest release of the MGN Dataset is the version 6.2, officially named MARCO GEOESTADÍSTICO 2014 VERSIÓN 6.2, it consists of digital files in shape file format, representing:
- 32 state geostatistical areas (AGEE)
- 2,457 Municipal Geostatistical Areas (AGEM)
- 17,465 basic geostatistical areas (AGEB)
- 296,228 Territorial Integration points
- 350 Island Territory (Islands) polygons
- Layer of "Economic Keys 7000" (Commercial stablishments)
- Layer of "Economic Keys 8000" (Commercial stablishments)
- Layer of "Arrival Points 9000" (transport network ports)
State and municipal boundaries are composed in some of its segments, of political and administrative boundaries and they are mostly geostatistical.
Several lines of the state limits were matched with the ones published in the document "Atlas of the Current Situation of the Interstate Political-Administrative Division of Mexico" This document is the result of a compilation and analysis of official sources, of the Congress, the State congress and other sources that describe such limits.
All the versions of the MGN Dataset as well as its related documentation are available at: