Katihar district, which was previously part of Purnia district, is part of the Mithila region. Mithila first gained prominence after being settled by Indo-Aryan peoples who established the Mithila Kingdom. During the late Vedic period, Kingdom of the Videhas became one of the major political and cultural centers of South Asia, along with Kuru and Pañcāla. The kings of the Kingdom of the Videhas were called Janakas. The Mithila Kingdom was later incorporated into the Vajji confederacy, which had its capital in the city ofVaishali, which is also in Mithila. Later it was dominated by chaudhary family who were the biggest landlord of katihar district. khan Bahadur Mohammad Baksh was the founder of Chaudhary family. Family hold 15000 acre land in katihar district and 8500 acre land in Purnea district. His greatgrandsons Chaudhary Mohammad Ashraf and Chaudhary Taj Mohammad live in a haveli known as Taj dehori. Katihar became a district when it was split from Purnia in 1973.
The first Karate training institute namely Tigers Martial Arts Academy Katihar started at Moffar Ganj in the year 1979-80 by Tiger Nasim Khan. TMAA is the first Karate Institution of Katihar District. Tiger Nasim Khan is the founder of Karate of Katihar district. TMAA Shotokan Karate Do Association INDIA is the first Internationally recognised Karate Association of Bihar from 1994. TMAA Shotokan Karate Do Association INDIA is also recognised by KARATE ASSOCIATION OF INDIA.
Sub-divisions
Katihar District comprises 3 Sub-divisions:
Katihar
Barsoi
Manihari
Katihar sub-division is further divided into 10 blocks: Katihar, Korha, Falka, Sameli, Barari, Kursela, Pranpur, Hasanganj, Dandkhora and Mansahi. Barsoi sub-division consists 4 blocks: Barsoi, Kadwa, Azamnagar and Balrampur. Manihari sub-division has 2 blocks: Manihari and Amdabad. Hasanganj being the largest block which was under the zamindari rule with acres of land under the possession of then Late Shri Jogendranarayan Roy Choudhury. The entire landmass with school, temple and market has been donated to the people from the predecessors who remain in Katihar now with little of the possession under the Paul Choudhury fame. Mansahi was also very active zamindari estate which was at par with Kursela and Falka.
Demographics
According to the 2011 census, Katihar district has a population of 3,071,029, roughly equal to the nation of Oman or the US state of Iowa. This gives it a ranking of 117th in India. The district has a population density of. Its population growth rate over the decade 2001–2011 was 28.23%. Katihar has a sex ratio of 916 females for every 1000 males, and a literacy rate of 53.56%. The district has a significant concentration of Muslims. At the time of the 2011 Census of India, 73.91% of the population in the district spoke Hindi, 12.04% Bengali, 9.11% Urdu, 2.97% Santali, 0.64% Kurukh and 0.60% Maithili as their first language.