Kaigaon is a village in Sillod tehsil in district of Aurangabad, Bihar, India. As per the data provided by Census of India in 2011, total population of Kaigaon was 3,025 which includes 1,570 males and 1,455 females. Kaigaon covers 1940.05 ha area. Pincode of Kaigaon is 431112.