The 2017 Revision of the World Population Prospects^[1] (United Nations, Department of Economic and Social Affairs, 2017a) has estimated that the total population in Mexico will be 147.5 million in the year 2030, 164.3 in 2050, and 151.5 in 2100.

[1] The World Population Prospects present global demographic profiles of the official United Nations population estimates and projections prepared by the Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat. Information from Mexico in the report is obtained through several official data sources such as the Population Census and National Demographic Surveys, among others.

References:

United Nations, Department of Economic and Social Affairs, P. D. (2017a). World Population Prospects. Key findings & advance tables. Working Paper No. ESA/P/WP/248. https://population.un.org/wpp/publications/files/wpp2017_keyfindings.pdf