More than 90 square kilometers. Huadu District is located in the south-central part of Guangdong Province, at the northern end of the Pearl River Delta, with Conghua in the east, Guangzhou in the south, Sanshui in the west, Nanhai in the southwest and Qingyuan in the north. The total area is 961.1 square kilometers /968 square kilometers. The total population is 620,000 (2003). District in Xinhua Street, zip code: 510800. Code: 440114. Area code: 020