The District Comprises 3 Sub-Divisions and 16 Blocks.
The district comprises 3 Sub-Divisions: Katihar, Barsoi and Manihari.
Katihar sub-division consists 10 blocks: Katihar, Dandkhora, Hasanganj, Korha, Sameli, Falka, Kursela, Barari, Mansahi and Pranpur .
Barsoi sub-division consists 4 blocks: Barsoi, Balrampur, Azamnagar and Kadwa.
Manihari sub-division has 2 blocks: Manihari and Amdabad.