The Feni Sadar postal code is 3900.
It is the code for the local post office, Feni district, Bangladesh.
So, if you send a letter or parcel there, write 3900 after the district name.
You can also enter 3900 in the ZIP field of any online form.

Details at a glance
- Area: Feni Sadar
- Code: 3900
- Post office: Feni Sadar
- Thana / upazila: Feni Sadar
- District: Feni
- Country: Bangladesh
In addition, every code in Bangladesh has four digits.
Because of this, 3900 is the full code and you need no extra numbers.
How to use the Feni Sadar postal code in an address
First, write the house and road number.
Then add the area, the thana and the district with the code.
House 10, Road 2
Feni Sadar
Feni-3900
Bangladesh
Finally, add a working mobile number for the courier.
That way, the parcel reaches the right door faster.
Codes near Feni Sadar
For example, these post offices are also in Feni district:
- Fazilpur – 3901
- Laskarhat – 3903
- Sharshadie – 3902
- Ahmadpur – 3932
- Chhagalnaia – 3910
- Dagondhuia – 3920
Overall, Feni district has 21 post offices in our directory, with codes from 3900 to 3943.
As a result, two nearby areas can still use different codes.
Therefore, never copy a neighbour’s code without checking it first.
You can also see every Feni code on one page.
Why the right code matters
A wrong code can send your parcel to another post office.
As a result, delivery may take several extra days.
Banks, passport offices and job portals also check the code against your address.
For this reason, many online shops reject an order when the code and district do not match.
Likewise, couriers in Feni sort parcels by code before they go out for delivery.
So, a correct code saves time for you and for the person who receives the parcel.
For official postal services, visit the Bangladesh Post Office website.