Water bodies Main rivers: dharla, pasur, arpangachhia, Taldhup, Malancha, kobadak, ball; Koyra canal is notable.

Koyra's history most likely dates as far back as the office of Khan Jahan Ali in the 15th century at least.

In 1962, the Koyra Madinabad Secondary School was established.During the Bangladesh Liberation War of 1971, a sub-sector of Sector 9 was founded in Koyra's Amati Union known as Bachharbari-Manoranjan Camp, and so most of the Mukti Bahini's and Mujib Bahini's operations were launched from here.

In Jaygirmahal, Dr Rafiqul Islam ran a secret medical centre to provide treatment to wounded freedom fighters.

[7] The upazila is home to Bengali Muslims primarily as well a very large Bengali Hindu community and the other small ethnic groups such as the Mahato and the Munda people who reside in the Koyra Sadar Union and Uttar Bedkashi Union.