Kaiping (Chinese: 开平), alternately romanized in Cantonese as Hoiping,[a] is a county-level city in Guangdong Province, China. It is located west of the Pearl River Delta and administered as part of the prefecture-level city of Jiangmen. The surrounding area, especially Sze Yup (Chinese: 四邑), is the ancestral homeland of many overseas Chinese, particularly in the United States. Kaiping has a population of 688,242 as of 2017 and an area of 1,659 square kilometres (641 sq mi). The locals speak a variant of the Toishan (Hoisan) dialect.