Pin Code of Santhi BO is 841502, SIWAN, Bihar June 25, 2020November 25, 2019 by Sarkari Help Advertisements 0 (0) Information about the post office and pincode of Santhi BO, SIWAN, Bihar Santhi BO Pin Code : 841502The Pincode 841502 of Santhi BO represents Siwan Division post office in SIWAN revenue district which comes under the Bihar Circleof Muzaffarpur Region. 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.