is a town located in Chikujà  District, Fukuoka Prefecture, Japan. , the town had an estimated population of 16,834, and a population density of 140 persons per km<sup>2</sup>. The total area of the town is .
Chikujà  is located in the eastern part of Fukuoka Prefecture, approximately halfway between Yukuhashi, Fukuoka and Nakatsu, à Âita. In the northern part of the town is the Chikushi Mountains, which includes mountains such as Mount Kubote and Mount Inugadake. The northerneast part of the town faces the Gulf of Suo on the Seto Inland Sea. The town is mostly rural. The town is roughly 75 kilometers from the prefectural capital at Fukuoka and 35 kilometers from Kitakyushu.
Fukuoka Prefecture
Chikujà  has a humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Chikujà  is 15.3 ðC. The average annual rainfall is 1663 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.4 ðC, and lowest in January, at around 4.3 ðC.
Per Japanese census data, the population of Buzen is as shown below
The area of Chikujà  was part of ancient Buzen Province. The port settlement of Shiida developed as a post station on the Nakatsu Kaidà  highway. During the Sengoku period it was mostly under control of the Utsunomiya clan, who were destroyed when the area was awarded to Kuroda Kambe under Tokugawa Ieyasu. The area was partly under the control of Nakatsu Domain, with smaller areas as tenryà  territory under direct control of the Tokugawa Shogunate. After the Meiji restoration, the villages of Shiida, Nishikakuta, Katsuragi, Yatsuta, Tsuiki, Kamijiroi, and Shimojoi were established on May 1, 1889, with the creation of the modern municipalities system. Shiida was raised to town status on September 2, 1898. Tsuiki became the site of an Imperial Japanese Navy air base from 1942. Tsuiki was raised to town status on April 1, 1955. Shiida and Tsuiki merged on January 1, 2010, to from the town of Chikujà Â.
Chikujà  has a mayor-council form of government with a directly elected mayor and a unicameral city council of 14 members. Chikujà Â, collectively with the city of Buzen and the other municipalities of Chikujà  District, Fukuoka contributes one member to the Fukuoka Prefectural Assembly. In terms of national politics, the city is part of the Fukuoka 11th district of the lower house of the Diet of Japan.
Chikujà  has a mainly rural economy based on rice cultivation and commercial fishing. The JASDF Tsuiki Air Base is located in the town.
Chikujà  has eight public elementary schools and two public junior high schools operated by the city government and one public high school operated by the Fukuoka Prefectural Board of Education.
JR Kyushu - Nippà  Main Line