Toa Payoh is a planning area and matured residential town located in the northern part of the Central Region of Singapore. Toa Payoh planning area borders Bishan and Serangoon to the north, the Central Water Catchment to the northwest, Kallang to the south, Geylang to the southeast, Novena to the west and Hougang to the east. Toa Payoh New Town is situated in the western portion of the Toa Payoh planning area. The latter occupies a much larger area, encompassing estates such as Potong Pasir and Bidadari.EtymologyToa Payoh, in the Hokkien dialect, translates as "big swamp" (with "Toa" meaning "big" and "Payoh" meaning "swamp"). The Malay word for swamp is paya. It is the Chinese equivalent of Paya Lebar, which translates to, big swamp land.Toa Payoh's old Chinese name, was known as Ang Chiang San (alternatively An Xiang Shan) or "Burial Hill". The area was called as such because of the presence of an old cemetery located in the area.