643101 PIN Code: Coonoor, The Nilgiris, Tamil Nadu – Post Offices

PIN code: 643101
Main post office: Coonoor (head office)
District: The Nilgiris
State: Tamil Nadu
Postal division: Nilgiris
Region and circle: Western Region Coimbatore, Tamilnadu circle
Delivery: Delivery PIN (1 of 1 offices delivers)
Location: Open on a map (11.349, 76.803)

Post offices with PIN 643101

Post office	Type	Delivery
Coonoor	Head office	Delivers mail

643101 has a single post office.

What the digits of 643101 mean

6: India Post's Southern region, which covers Kerala, Lakshadweep, Puducherry and Tamil Nadu (3,512 PINs).
64: the Tamilnadu postal circle; 186 PINs start with 64.
643: the sorting district, shared by 46 PINs in 1 district.
101: the delivery post office within it, Coonoor.

Head post office for 643101

Coonoor is itself a head post office. It keeps the accounts for the Nilgiris division's sub and branch offices.

Nearby PIN codes in The Nilgiris

All 47 PIN codes in The Nilgiris

Writing an address with 643101

Put the PIN on the last line, after the town and state, so the sorting machines and postmen can read it:

Name
House number, street
Coonoor post office
The Nilgiris, Tamil Nadu – 643101

Frequently asked questions

Which post office has PIN code 643101?

Coonoor head office, in The Nilgiris district, Tamil Nadu.

Is 643101 a delivery PIN code?

Yes. Its post office delivers mail; letters addressed to 643101 are delivered.

Which district is 643101 in?

The Nilgiris district, Tamil Nadu. It is in the Nilgiris postal division (Western Region Coimbatore) of the Tamilnadu postal circle.

What is the head post office for 643101?

Coonoor is itself a head post office, with PIN 643101.

Sources

Last checked on 6 October 2026. PIN codes and post offices are from India Post’s directory on data.gov.in. Post offices are sometimes opened, merged or renamed; check with India Post before relying on a PIN for an official form.

643101 PIN code: Coonoor, The Nilgiris