- PIN code
- 421506
- Main post office
- Additional Ambernath (sub office)
- District
- Thane
- State
- Maharashtra
- Postal division
- Thane
- Region and circle
- Navi Mumbai Region, Maharashtra circle
- Delivery
- Delivery PIN (1 of 1 offices delivers)
- Location
- Open on a map (19.188, 73.191)
Post offices with PIN 421506
| Post office | Type | Delivery |
|---|---|---|
| Additional Ambernath | Sub office | Delivers mail |
421506 has a single post office.
What the digits of 421506 mean
- 4: India Post's Western region, which covers Chhattisgarh, Goa, Madhya Pradesh and Maharashtra (2,784 PINs).
- 42: the Maharashtra postal circle; 237 PINs start with 42.
- 421: the sorting district, shared by 30 PINs in 2 districts.
- 506: the delivery post office within it, Additional Ambernath.
Head post office for 421506
The post offices with this PIN belong to the Thane postal division, whose head offices are listed below. Money orders, savings accounts and complaints that a sub or branch office cannot settle go to the head office.
- Kalyan City head post office: 421301
- Thane head post office: 400601
Nearby PIN codes in Thane
- Netaji Bazar421505
- Kulgaon421503
- O.E.Ambernath421502
- Ambernath421501
- Shahapur (Thane)421601
- Kasara (Thane)421602
- Bhatsanagar421603
- Manda421605
Writing an address with 421506
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 Additional Ambernath post office Thane, Maharashtra – 421506
Frequently asked questions
Which post office has PIN code 421506?
Additional Ambernath sub office, in Thane district, Maharashtra.
Is 421506 a delivery PIN code?
Yes. Its post office delivers mail; letters addressed to 421506 are delivered.
Which district is 421506 in?
Thane district, Maharashtra. It is in the Thane postal division (Navi Mumbai Region) of the Maharashtra postal circle.
What is the head post office for 421506?
The Thane postal division's head offices are Kalyan City (421301) and Thane (400601).
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.