Lon Sekjan Block 12 is a village in Phuloni tehsil in district of Karbi Anglong, Assam, India. As per the data provided by Census of India in 2011, total population of Lon Sekjan Block 12 was 911 which includes 474 males and 437 females. Lon Sekjan Block 12 covers 25 ha area. Pincode of Lon Sekjan Block 12 is N/A.