is one of ten wards of the city of Saitama, in Saitama Prefecture, Japan, and is located in the northeastern part of the city. , the ward had an estimated population of 112,862 and a population density of 2,300 persons per km<sup>2</sup>. Its total area was .
Iwasuki Ward is within the Kantà  Plain, in the northeast portion of Saitama City.
Iwatsuki-ku is surrounded by Minuma-ku (west), Midori-ku (southwest), and the cities of Kawaguchi (south), Koshigaya (southeast), Kasukabe (northeast), Shiraoka (north), and Hasuda (northwest).
Iwatsuki developed from the Muromachi period as a castle town next to Iwatsuki Castle and the center of Iwatsuki Domain under the Edo period Tokugawa shogunate. It was also a post town on the Nikkà  Onari Kaidà  connecting Edo with Nikko.
The modern town of Iwatsuki created within Minamisaitama District, Saitama with the establishment of the municipalities system on April 1, 1889. On May 3, 1954, Iwatsuki merged with the neighboring villages of Niiwa, Wado, Kawadori, Kashiwazaki, Kawai and Jionji and was elevated to city status on July 1, 1954. On April 1, 2005, Iwatsuki merged with the city of Saitama, becoming Iwatsuki Ward. Iwatsuki is known as the "City of Dolls" (人形ã®ã¾ã¡ Ningyà  no Machi) due to a history of doll-making that dates back to the 17th century.
Municipal junior high schools:
Municipal elementary schools:
Tà Âbu Railway â Noda Line