The 2010 census found Guangzhou's population to be 12.78 million. , it was estimated at 13,080,500, with 11,264,800 urban residents. Its population density is thus around 1,800 people per km2. The built-up area of the Guangzhou proper connects directly to several other cities. The built-up area of the Pearl River Delta Economic Zone covers around and has been estimated to house 22 million people, including Guangzhou's nine urban districts, Shenzhen (5.36m), Dongguan (3.22m), Zhongshan (3.12m), most of Foshan (2.2m), Jiangmen (1.82m), Zhuhai (890k), and Huizhou's Huiyang District (760k). The total population of this agglomeration is over 28 million after including the population of the adjacent Hong Kong Special Administrative Region. The area's fast-growing economy and high demand for labor has produced a huge "floating population" of migrant workers; thus, up to 10 million migrants reside in the area least six months each year. In 2008, about five million of Guangzhou's permanent residents were hukouless migrants.
the 2010 census found guangzhou's population to be 1278 million  it was estimated at 13080500 with 11264800 urban residents its population density is thus around 1800 people per km2 the built-up area of the guangzhou proper connects directly to several other cities the built-up area of the pearl river delta economic zone covers around and has been estimated to house 22 million people including guangzhou's nine urban districts shenzhen (536m) dongguan (322m) zhongshan (312m) most of foshan (22m) jiangmen (182m) zhuhai (890k) and huizhou's huiyang district (760k) the total population of this agglomeration is over 28 million after including the population of the adjacent hong kong special administrative region the area's fast-growing economy and high demand for labor has produced a huge "floating population" of migrant workers; thus up to 10 million migrants reside in the area least six months each year in 2008 about five million of guangzhou's permanent residents were hukouless migrants