Postal & Logistics Guide
Mastering Indian Postal Index Numbers: Anatomy of 6-Digit PIN Codes & Mail Sorting
Comprehensive guide to India Post 6-digit PIN codes. Learn postal zone numbers, sub-district routing, and logistics addressing standards.
1. The Origin of Postal Index Numbers in India
Introduced on August 15, 1972, by Shriram Bhikaji Velankar, the Postal Index Number (PIN) system simplified manual mail sorting across India's vast geography. Prior to PIN codes, language barriers and duplicate village names caused frequent postal delivery failures.
2. Structural Breakdown of a 6-Digit PIN Code
Example: 110001 (New Delhi GPO)
• 1 = Northern Postal Region (Delhi, Haryana, Punjab, HP, J&K)
• 10 = Delhi Sub-Region / Postal Circle
• 0 = Sorting District
• 01 = Specific Delivery Post Office (New Delhi GPO)
• 1 = Northern Postal Region (Delhi, Haryana, Punjab, HP, J&K)
• 10 = Delhi Sub-Region / Postal Circle
• 0 = Sorting District
• 01 = Specific Delivery Post Office (New Delhi GPO)
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