Taishan was originally called Xin-Ning County and was first established in 1499 (the twelfth year of the Hongzhi Reign period of the Ming Dynasty). In 1914, it was renamed Taishan County, and in 1992, it was elevated to a city. It has a land area of 3287.8 km and a registered resident population of 907,700 by 2020 .