Region XII (Spanish: Región XII. Tlalnepantla) is an intrastate region within the State of Mexico.
Geography It is one of the 10 regions that comprise the Mexico City Metropolitan Area. It borders Mexico City to the north, and is part of the Greater Mexico City.
The region comprises two cities, both densely populated cities having very low margination, Tlalnepantla de Baz and Atizapan de Zaragoza.
Municipalities MunicipalityArea (km²) 2010Population 2005 CensusPopulation 2010 CensusPopulation density (/km² 2010) Tlalnepantla de Baz83.5683,808664,2257,954 Atizapan de Zaragoza89.9472,526489,9375,448 Region XII Tlalnepantla 173.4 1,156,334 1,164,162 6,654.7
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