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PIN code 581103 is the Postal Index Number assigned to the Alnavar S.O post office in Dharwad district, Karnataka. It is administered under the Karnataka Circle Postal Circle. The code falls under Zone 5 of India's postal network, covering the Southern India region.
India's PIN code system — standing for Postal Index Number — was introduced on 15 August 1972 to streamline postal sorting and delivery across the country. Each 6-digit code is structured systematically: the first digit (5) identifies the broad postal zone; the first three digits (581) pinpoint the postal district or sorting hub; and the last three digits (103) identify the specific delivery post office.
When addressing letters, parcels, or courier shipments to Alnavar S.O in Dharwad, Karnataka, always include PIN – 581103 in the postal address to ensure accurate sorting and on-time delivery by India Post.
| PIN Code | 581103 |
| Zone | Zone 5 · Southern India |
| Sort District | 581 |
| Delivery Code | 103 |
| Postal Circle | Karnataka Circle |
| State / UT | Karnataka |
Browse PIN codes for other post offices in Dharwad, Karnataka