The Mount Tai Enrollment Area, located in the city of Tai'an, Shandong Province, China, has a population of approximately 1.2 million people. This figure includes residents of the city proper and surrounding rural areas that are administratively part of the Mount Tai Enrollment Area. The population is diverse, with a mix of Han Chinese, as well as smaller ethnic groups such as the Hui and Manchu.

The population of the Mount Tai Enrollment Area has been influenced by several factors. Firstly, the area's historical significance as a cultural and religious site has attracted a steady flow of tourists and pilgrims over the centuries, contributing to its population growth. Mount Tai, known as "the Southern Sacred Mountain," is one of the five sacred mountains in China and has been a place of worship since ancient times. This has led to the development of infrastructure and services to cater to the needs of visitors, which in turn has drawn more residents to the area.

Secondly, the region's economic development has played a crucial role in population growth. The Mount Tai area has seen significant industrialization and urbanization, particularly in the last few decades. The establishment of various industries, including manufacturing, tourism, and agriculture, has created job opportunities, attracting both local and migrant workers to the area. According to the National Bureau of Statistics of China, the GDP of Tai'an City reached 150 billion yuan in 2020, reflecting the robust economic growth in the region.

Moreover, the government's policies on population control and urbanization have also impacted the population of the Mount Tai Enrollment Area. The one-child policy, implemented in 1979, initially led to a decline in birth rates, but subsequent relaxation of the policy has allowed for a gradual increase in the population. Additionally, the government's push for urbanization has encouraged rural residents to move to urban areas, contributing to the overall population growth in the region.

In conclusion, the population of the Mount Tai Enrollment Area is approximately 1.2 million, influenced by factors such as historical significance, economic development, and government policies. The area's rich cultural heritage and economic opportunities have made it an attractive destination for residents and visitors alike.