1908 - Chhatak Police outpost was established and it was further upgraded to a thana in 1922.
1941 - One of the oldest industrial units in the country, Chhatak Cement Company Ltd. was established in 1941. In order to raise production capacity from 1,35,000 tons to 2,33,000 tons, the 2nd phase of the expansion programme has been completed with financing from Asian Development Bank. The Factory uses limestone imported from Meghalaya, India and from its own quarry-Takerghat Limestone Mining Project. French multinational Lafarge Surma Cement Limited (LSCL) at Chhatak ($255 million state-of-the-art plant) has a capacity of producing 1.5 million tonnes of cement every year.
1959 - (Discovery of Gas) Chhatak expanded rapidly following the discovery of a natural gas field nearby. As well as the work generated in extracting gas, the town also has a number of industries powered by natural gas, including the largest cement plant in Bangladesh.
1985 - The thana was turned into an upazila
