Chirang district is a district of the Assam state with its administrative headquarters located at Kajalgaon. Chirang is one of the newly formed district of Assam state. On 4th June, 2004 it has been carved out from the districts of Bongaigaon, Kokrajhar, Bongaigaon and Barpeta and emerged as a separate Chirang district. Then the Kajalgaon was declared as the district headquarters. Chirang District is the new district in the Bodoland Territorial Council (BTC) area of the state. The name of the district "Chirang" is derived from the two Garo words, i.e. "Chi" meaning water and "Rang" meaning wealth. It may also be a copy of tsirang district of the neighbouring country, Bhutan. On the other hand, Most of its locals believe that the term, Chirang is taken from the Bodo word, Chirang or Sirang where Si means life and Rang means money. Finally, after the non-native Bodo speakers started to call it Chirang from Sirang. Therefore, with the passage of time the word Sirang was changed into Chirang.

Geographically, the district lies at 26°54'N latitude, 90°69'E longitude and 89 m altitude. In the year 2021, there was a total 36.52% forest area of total geographical area. The district encompasses a geographical area of 1,923 sq km. and it is bounded by Bhutan on the north, by Bongaigaon district and a part of the Kokrajhar district on the south, Baksa district and a part of the Barpeta district on the east and Kokrajhar district on the west. The district falls under the Lower Brahmaputra Valley Agro-Climatic Zone. The natives of the district enjoys sub-tropical climate with hot and humid summer subsequently cold winter. Most of its rainfall occurs in the monsoon season. The principal rivers that flow through the district are Champamati, Aie and Manas. The actual rainfall in the district was 3010.8 mm in the year of 2021-22.

Administration wise, the district is divided into 3 revenue circles namely Sidli, Bijni and Bengtal. It also has 6 development blocks in the Chirang district likewise, Sidli, Borobazar, Dangtol (part), Manikpur (part), Gobardhana (part) and Chakchaka (part). Moreover, it comprises 6 sub-districts, 3 towns and 508 villages. The administrative language in the district is Assamese and English.

According to 2011 census the district has a population of 4,82,162 including 2,44,860 are males and 2,37,302 are females. The district has a sex ratio of 969 (females for every 1000 males) and child ratio of 968 (females per 1000 males). As per 2011 census the major religion in the district is Hindu with 66.50% of the total population. The population density in the district is 251 (persons per sq. km.). As per 2011 census the principal languages in the district are Bodo and Bengali with 37.83% and 33.19%. In the year 2020 the number of live births in the district was 6,408 out of which 3,120 were males and 3,288 were females. In the same year the number of deaths in the district was 2,088 out of which 1,308 were males and 780 were females. The major schedule caste population in the district is Namasudra with 61.7% of the total population. Whereas the major schedule tribe population in the district is Boro / Borokachari with 93.96% of the total population. During the year 2001-2011 the population growth rate in the district was 323.04% including 316.22% were males and 330.32% were females.

The economy of the district is mainly dependent on agricultural sector. More than half of its population are engaged in agriculture in order to earn their livelihood. The chief agricultural products in the district are rice, paddy and different types of pulses. In spite of launching many advanced agricultural schemes yet its farmers are sticks to their old agricultural techniques. Every year a huge chunk of revenue comes from the agricultural products in the district helps in its economy to a great extent. The district is scantily industrialised since it has only a few agro-based industries. In the year 2018-19 the gross domestic product in the district was Rs. 3,20,176 lakhs at current price and Rs. 2,31,222 lakhs at constant prices in the year 2011-2012. The net domestic product in the district during the period 2007-08 was Rs. 70,557 lakh at current price and Rs. 57,542 lakh at constant prices in the year 1999-2000. The Per Capita Income or NDDP, At Factor Cost during the period 2018-19 was Rs. 64,907 at current price and Rs. 48,481 at constant prices in the year 2011-2012.

The district is well known as an abode of several reputed educational institutions. It provides a platform for higher education. As per 2011 census the literacy rate in the district is 63.55% including 70.24% are males and 56.65% are females. The literate population in the district is 2,59,902 out of which 1,45,869 are males and 1,14,033 are females. The illiterate population in the district is 2,22,260 out of which 98,991 are males and 1,23,269 are females.

Kamal Singh Narzary, an eminent Indian politician and a member of the Assam Legislative Assembly from Bijni Assembly constituency in the Chirang district in the year 2013 was born in the district. He is a member of the Bodoland People's Front party.

The district has several centres of attraction which allures many travellers from different parts of the country as well as world. Some of the notable tourist spots in the district are Bongaigaon Refinery (IOCL), Champamati Mini Hydro-Electric Power Project, Kalamati(Orchid and Butterfly habitat), Ghumeswar Hills, Tukrabasti (picnic spot), Gabharukhunda (Biological Hotspot), Manas Tiger Reserve, Raja Charang Mandir, etc.