- PIN code
- 400091
- Main post office
- Borivali (head office)
- District
- Mumbai Suburban
- State
- Maharashtra
- Postal division
- Mumbai City North West
- Region and circle
- Mumbai Region, Maharashtra circle
- Delivery
- Delivery PIN (1 of 1 offices delivers)
- Location
- Open on a map (19.232, 72.840)
Post offices with PIN 400091
| Post office | Type | Delivery |
|---|---|---|
| Borivali | Head office | Delivers mail |
400091 has a single post office.
What the digits of 400091 mean
- 4: India Post's Western region, which covers Chhattisgarh, Goa, Madhya Pradesh and Maharashtra (2,784 PINs).
- 40: the Maharashtra postal circle; 297 PINs start with 40.
- 400: the sorting district, shared by 125 PINs in 4 districts.
- 091: the delivery post office within it, Borivali.
Head post office for 400091
Borivali is itself a head post office. It keeps the accounts for the Mumbai City North West division's sub and branch offices.
Nearby PIN codes in Mumbai Suburban
- Borivali West400092
- Tilak Nagar SO Mumbai400089
- Chakala Midc400093
- T F Deonar400088
- Anushakti Nagar400094
- IIM Mumbai PO400087
- Kharodi400095
- Ghatkopar West400086
All 66 PIN codes in Mumbai Suburban
Writing an address with 400091
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 Borivali post office Mumbai Suburban, Maharashtra – 400091
Frequently asked questions
Which post office has PIN code 400091?
Borivali head office, in Mumbai Suburban district, Maharashtra.
Is 400091 a delivery PIN code?
Yes. Its post office delivers mail; letters addressed to 400091 are delivered.
Which district is 400091 in?
Mumbai Suburban district, Maharashtra. It is in the Mumbai City North West postal division (Mumbai Region) of the Maharashtra postal circle.
What is the head post office for 400091?
Borivali is itself a head post office, with PIN 400091.
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.