Figures indicated by "UN estimate" are based on the July 1, 2009 estimate by the United Nations Department of Economic and Social Affairs – Population Division. Àṣìṣe ìtọ́kasí: Invalid <ref> tag; no text was provided for refs named unpop For the Conapo estimates, check under República Mexicana and press "Ver" for statistics. A 2003 U.S State Department report states the following: "Although the 2002 census estimated the population at 1,015,000, credible estimates put the number at closer to 500,000. The opposition claimed that the Government inflated the census in anticipation of the December presidential election." (...) "Opposition leaders charged earlier in the year that census results showing a twofold population increase were flawed and that numbers were inflated to perpetuate election fraud." [1] The official census figures are available here.