[jps50]

Your assessing I.T. officer is also the CPIO of your IT ward. U can address appln and envelope as
CPIO/ITO, Ward No.________, Income Tax Office and then write the address of IT office concerned. Name is not material as officers do get transfered/deputed etc. Never write name, it will create confusion.

Stamp affixed on acknowledgement copy of Tax Return shows your IT ward No. If U are a salaried person, u can write salary ward [mention first letter of your name as it appears on PAN card]. In small places, there is one salary ward, in big places it is subdivided as per alphabets of name of assessee e.g. A to M, N to Z etc depending upon workload.