Pin Code of TETHALI BO is 841232, SIWAN, Bihar June 26, 2020November 25, 2019 by Sarkari Help Advertisements 0 (0) Information about the post office and pincode of TETHALI BO, SIWAN, Bihar TETHALI BO Pin Code : 841232 The Pincode 841232 of TETHALI 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.