Final answer:
The population of Mexico is approximately 126 million, with significant changes in population growth occurring due to urbanization and industrialization leading to declining family sizes.
Step-by-step explanation:
The population of Mexico as of a recent estimate is approximately 126 million. In the past century, Mexico has experienced significant changes in its population dynamics. In 1970 the population was about 50 million and by the year 2000, it had more than doubled. As Mexico has urbanized and industrialized, there has been a decline in family size and fertility rates, leading to slower population growth. In 2017, the population was recorded to be over 124 million, indicating a continuing, although slower, growth trend.