Pin Code of CDA SO is 800019, PATNA, Bihar May 19, 2020November 25, 2019 by Sarkari Help Advertisements 0 (0) Information about the post office and pincode of CDA SO, PATNA, Bihar CDA SO Pin Code : 800019 The Pincode 800019 of CDA SO represents Patna Division post office in PATNA revenue district which comes under the Bihar Circleof NA. 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.