Tamil Nadu is the southernmost state of India, bordered by Kerala in the west, Karnataka in the northwest, and Andhra Pradesh in the north. Chennai is the capital city of Tamil Nadu, and it is the largest city. Moreover, The state is famous for many hill stations, historical buildings, and world heritage sites. Tamil Nadu comes under the south Pincode Zone, and the pin prefix is 60-66. The state has about 94 head post offices and 1787 sub-post offices.
As of now, Tamil Nadu has about 38 districts. But there was only 13 district during state formation in 1956. All district post offices come under the Tamil Nadu post circle. In terms of area, Tamil Nadu is the tenth largest state. As per the last census of 2011, Tamil Nadu has more than 7.2 crore people. So, to serve every people, the government has formed more than 11870 post offices.
Below Google Map helps in finding the exact location of the post office. You can also get district-specific Pincode and post office information on clicking a district.