The Madhnagar postal code is 6403.
It is the code for the local post office in Natore Sadar thana / upazila, Natore district, Bangladesh.
So, if you send a letter or parcel there, write 6403 after the district name.
You can also enter 6403 in the ZIP field of any online form.

Details at a glance
- Area: Madhnagar
- Code: 6403
- Post office: Madhnagar
- Thana / upazila: Natore Sadar
- District: Natore
- Country: Bangladesh
In addition, every code in Bangladesh has four digits.
Because of this, 6403 is the full code and you need no extra numbers.
How to use the Madhnagar 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
Madhnagar, Natore Sadar
Natore-6403
Bangladesh
Finally, add a working mobile number for the courier.
That way, the parcel reaches the right door faster.
Codes near Madhnagar
For example, these post offices are also in Natore district:
- Baiddyabal Gharia – 6402
- Digapatia – 6401
- Natore Sadar – 6400
- Abdulpur – 6422
- Baraigram – 6432
- Dayarampur – 6431
Overall, Natore district has 13 post offices in our directory, with codes from 6400 to 6450.
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 Natore 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 Natore 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.