Pin Code of Sonaili SO is 855114, KATIHAR, Bihar June 21, 2020November 25, 2019 by Sarkari Help Advertisements 0 (0) Information about the post office and pincode of Sonaili SO, KATIHAR, Bihar Sonaili SO Pin Code : 855114 The Pincode 855114 of Sonaili SO represents Divisional Office Katihar post office in KATIHAR revenue district which comes under the Bihar Circleof East Region, Bhagalpur. How useful was this post? Click on a star to rate it! Submit Rating Average rating 0 / 5. Vote count: 0 No votes so far! Be the first to rate this post.