Luoyang (; ), formerly romanised as Loyang, is the ancient capital located in the confluence area of Luo River and Yellow River in Central China. It is a prefecture-level city in western Henan province. It borders the provincial capital of Zhengzhou to the east, Pingdingshan to the southeast, Nanyang to the south, Sanmenxia to the west, Jiyuan to the north, and Jiaozuo to the northeast. As of the final 2010 census, Luoyang had a population of 6,549,941 inhabitants with 1,857,003 people living in the built-up (or metro) area made of city's five urban districts, all of which except the Jili District not urbanized yet.