The Biratnagar postal code is 56613, the code used by the city's General Post Office and most central areas. If you post a letter, lodge a document or fill in an online form, this is the number you usually need.
Still, the full picture goes deeper than one code. Biratnagar is a sprawling metropolitan city with 19 wards, each forming part of how mail and addresses work across eastern Nepal.
What is the postal code of Biratnagar?
The main Biratnagar postal code is 56613. This code belongs to the Biratnagar General Post Office (GPO), which serves the central wards and acts as the hub for the wider Morang area. For most everyday purposes, 56613 is the code you should use.
However, some directories list ward-level codes too. These longer codes identify individual wards within the metropolitan city. In practice, the five-digit GPO code works for nearly all post, parcels and official forms. If a courier asks for something more specific, your ward number usually fills the gap.
How postal codes work in Nepal
Nepal uses a five-digit postal code system, similar to a ZIP code overseas. The country is split into postal regions, and each district has its own GPO with a unique number. Biratnagar sits in Morang District, which explains why its code differs from cities in other districts.
For comparison, Kathmandu's GPO uses 44600, while Biratnagar uses 56613. The higher the first digit, generally the further east or specific the region. To understand why Biratnagar carries an eastern code, it helps to know which district Biratnagar belongs to and how the administrative map fits together.
Postal codes also connect to provinces. Biratnagar is the capital of the province Biratnagar sits in, Koshi Province. As a result, the city handles mail not just for itself but as a regional administrative centre.
How many wards are there in Biratnagar?
Biratnagar Metropolitan City has 19 wards. Each ward (वडा) is a local unit with its own elected representatives, office and boundaries. Together, these 19 wards make up the second-largest city in Nepal by population.
The city expanded to its current shape in 2017, when several surrounding municipalities merged into one metropolitan body. Consequently, the ward count grew to cover a much larger area than the old town centre. Today, ward offices handle local services such as recommendations, registrations and basic civic paperwork.
Importantly, your ward number matters for legal and official documents. Many citizenship records, property papers and court filings reference the exact ward where you live. For that reason, knowing your ward is just as useful as knowing the postal code.
The metropolitan city structure explained
Biratnagar Metropolitan City (महानगरपालिका) is one of only a handful of metropolitan cities in Nepal. It covers roughly 77 square kilometres and, according to the 2021 census, had a population of around 244,750. That makes it a major urban centre and the economic heart of the east.
The city also serves as the provincial capital of Koshi Province. Therefore, it hosts provincial offices, courts and key government bodies alongside its 19 wards. This dual role, as both a district headquarters and a provincial capital, gives Biratnagar unusual administrative weight.
Its history adds further depth. The settlement carries a long legacy, and the old name of Biratnagar reflects its ancient roots.
Who runs the city and its wards?
Each ward elects a chairperson and ward members. Above them sits the metropolitan executive, led by the mayor. To learn who currently holds that office, see our guide on the mayor of Biratnagar and how local government operates here.
The metropolitan office coordinates services across all 19 wards. Meanwhile, ward offices deal with day-to-day requests from residents. This two-tier setup keeps local services close to the people while bigger decisions stay central. You can confirm official ward details on the Biratnagar entry on Wikipedia or the metropolitan city website.
Why postal codes and wards matter for legal work
Accurate addresses are not just a postal convenience. In legal practice, the correct ward and postal code can affect where you file a case, register a deed or serve a notice. A small error in an address can delay a property transfer or a court summons.
For example, property transactions rely heavily on precise ward and plot details. Our team often assists clients with property law matters where the exact ward and address determine the registration office and applicable records. Similarly, court filings follow strict jurisdiction rules, which you can read about in our guide to the types of court in Nepal.
Biratnagar's role as a regional hub also draws people seeking work, trade and services. To see what makes the city tick, explore what Biratnagar is famous for, from its historic industry to its busy border trade. As a trusted lawyer in Biratnagar, I help clients navigate the paperwork behind all of it.
Quick summary
To recap, the Biratnagar postal code is 56613, used by the GPO and central wards. The city holds 19 wards within a metropolitan structure covering around 77 square kilometres. Moreover, it serves as both the headquarters of Morang District and the capital of Koshi Province.
Whether you are sending mail, filling a form or preparing a legal document, getting the postal code and ward right saves time and avoids mistakes. Above all, accuracy protects your rights when official records are involved.
I am Rupesh Koirala, an advocate practising in Biratnagar and the principal of Sulav Legal Services. If you need help with property, court filings or any legal matter tied to your address or ward, get in touch with our team today for clear, local guidance.