Delta State postal codes begin with 32 or 33. Asaba head office is 320001, and the state’s codes run up to 334111.
Delta sits in postal region 3 with Edo, Ondo and Ekiti. It is unusual in having no single dominant city. Asaba is the capital, Warri is the commercial centre, and Sapele, Ughelli, Agbor and Oleh all function as their own hubs, which is why the state carries four separate telephone area codes and several postal blocks.
Delta State Postal Code at a Glance
| State capital | Asaba |
|---|---|
| Head office code | 320001 |
| Code range | 320001 to 334111 |
| Dispatch prefixes | 320, 321, 322, 330, 331, 332, 333 |
| Local Government Areas | 25 |
| Postal region | Region 3 |
| Digits | Six, numeric only |
Reading a Delta State Code
Take 320001, the Asaba head office code. The first digit, 3, puts the address in postal region 3. The first three digits, 320, name the dispatch district that sorts outgoing mail. The last three, 001, are the delivery location, and 001 always means the head office itself.
The same three part structure explains why codes inside one town look almost identical while codes from opposite ends of the state look unrelated. Two houses on the same street usually share all six digits, because they share a delivery round. Two houses in different towns rarely share more than the first three.
Every genuine Delta State code is built the same way, which gives you a quick test. If someone hands you a code for an address in Delta State and it does not begin with 32, it is not a Delta State code.
Dispatch Districts in Delta State
Delta’s blocks divide along its natural centres rather than around one city. The 320 block covers Asaba and the Aniocha and Oshimili local governments on the eastern bank of the Niger. The 330, 332 and 333 blocks reach Warri, Sapele, Ughelli and the western and southern local governments, including the riverine ones.
| Dispatch prefix | Codes it issues |
|---|---|
| 320 | 320001 to 320999 |
| 321 | 321001 to 321999 |
| 322 | 322001 to 322999 |
| 330 | 330001 to 330999 |
| 331 | 331001 to 331999 |
| 332 | 332001 to 332999 |
| 333 | 333001 to 333999 |
The 25 Local Government Areas in Delta State
Delta has 25 local government areas. Several of them, notably Burutu, Bomadi, Patani and Warri South West, are riverine, meaning parts of them are reached by boat and delivery works differently there.
| Aniocha North | Aniocha South | Bomadi |
| Burutu | Ethiope East | Ethiope West |
| Ika North East | Ika South | Isoko North |
| Isoko South | Ndokwa East | Ndokwa West |
| Okpe | Oshimili North | Oshimili South |
| Patani | Sapele | Udu |
| Ughelli North | Ughelli South | Ukwuani |
| Uvwie | Warri North | Warri South |
| Warri South West |
What you will not find above is a code beside each name, and that is deliberate. NIPOST issues codes to delivery districts, not to local governments. Tables that pair the two are estimates, which is why published lists for Delta State contradict each other and sometimes contradict themselves.
A State With Four Centres
Most states have one postal centre of gravity. Delta has four. Asaba is the seat of government, Warri is the oil and commercial capital, Sapele has its port and timber history, and Agbor anchors the north east. Each has its own telephone area code, 02056, 02052, 02054 and 02055 respectively, which is the clearest signal of how decentralised the state is.
For addressing this means the town name is doing more work in Delta than in almost any other state. A street address without a town is close to useless here, because the same road name may exist in Warri, Sapele and Ughelli.
The Asaba and Onitsha Confusion
Asaba sits directly across the Niger from Onitsha, and the two are joined by the bridge into a single functional urban area. They are in different states, different postal regions and different code blocks: Asaba is Delta at 320, Onitsha is Anambra at 420. Post addressed to one and coded for the other is a routine error along that corridor, and it is worth checking twice on anything commercial.
Warri, the Oil Belt and the Creeks
Warri behaves like Port Harcourt on a smaller scale. Corporate and industrial post concentrates there, and the districts serving the town and the Effurun axis are among the better maintained in the state.
The creek local governments are the opposite. Communities in Burutu, Bomadi and Patani are reached by water, delivery districts are wide, and post is frequently collected from a town office rather than delivered. Name the community and include a phone number, and treat the code as the instruction that gets the item to the right mainland office.
Post Office Boxes and Private Mail Bags in Delta State
Boxes are held at a specific branch rather than at a street, which is why the branch name is not optional when you write one out. A private mail bag works the same way but is issued to an organisation rather than an individual, which is why ministries, universities and large companies publish one instead of a street address.
The layout looks like this:
P.O. Box 1234 Asaba Main Post Office 320001 Asaba Nigeria
Two practical notes. A box address is often more reliable than a street address in Delta State, because it removes the guesswork about which delivery district covers you, and it survives you moving house. But couriers who deliver to the door, which is most of them, cannot deliver to a box at all, so keep a street address for anything that arrives by bike.
Codes Published for Delta State That Cannot Be Right
We tested the Delta State tables that circulate online for internal contradictions, meaning two local governments published with ranges that share the same numbers. Delta State shows none, which puts it among the cleaner states in the country.
That is worth something, but be careful what you read into it. Consistency is not accuracy. It means nobody has published two ranges that openly contradict each other for Delta State, not that NIPOST ever issued a code to a local government. The safe reading stands: treat block level information as solid and treat any single code attached to a local government as an estimate until your delivery office confirms it.
It is worth knowing how wrong codes get into circulation in the first place, because the same three routes explain almost every bad table online. The first is interpolation, where somebody knows two real codes and fills the gap between them with a tidy range. The second is inheritance, where one site guesses and forty others copy it, which is why a wrong code can look authoritative through sheer repetition. The third is drift, where a code was right when it was published and the delivery district was later split or merged.
You can check any Delta State code you are given in two steps. Confirm it starts with one of the dispatch prefixes listed above, which rules out codes belonging to another state entirely. Then confirm the last three digits with the delivery office, which is the only part no table can settle for you.
What Happens to a Letter Posted in Delta State
Knowing the chain explains why the first three digits matter more than the last three. A letter posted anywhere in Delta State is collected to the nearest branch, then moved to the dispatch office named by the first three digits of the destination code. Outgoing post leaves the state through the region 3 network, and incoming post arrives the same way in reverse, landing at the dispatch office before it is broken down to the delivery round in the last three digits.
The code earns its keep on registered and tracked items. Ordinary post in Delta State is forgiving, because a postman who recognises the street will deliver it regardless of the digits. A registered item, an EMS parcel or anything arriving from abroad is handled against the code at each transfer, so a wrong dispatch prefix on those can add days or send the item back.
Get the first three digits wrong and your letter travels to the wrong part of the country before anyone notices. Get the last three wrong and it usually still arrives, a day late, because the delivery office recognises the street. This is why a head office code such as 320001 is a safe fallback and a random six digits is not.
How to Write a Delta State Address
Delta addresses should always name the town, because the state’s towns are spread out and several share street names.
The order NIPOST expects runs from the specific to the general, with the code on the same line as the town:
Mrs P. Okowa 15 Nnebisi Road Asaba 320001 Delta State Nigeria
Two habits worth breaking. Do not put the code on its own line at the bottom the way American addresses do, because Nigerian sorting reads it beside the town name. And do not drop the state, even for a well known city, because several towns share names across states and the state is what disambiguates them.
Neighbouring Codes in Region 3
Delta State shares its postal region with the states below. If a code you have been given starts with one of their prefixes, the address is not in Delta State.
| State | Prefix |
|---|---|
| Edo | 300 |
| Ondo | 340 |
| Ekiti | 360 |
Finding the Code for Your Street
- Ask at the counter of the post office that serves your street. Staff there work from the delivery district list daily and can give you the exact code.
- Search the NIPOST postcode finder by address rather than by local government.
- Where the delivery is informal anyway, use 320001, the Asaba head office code, which routes correctly across the state.
What to Enter on a Form
Type 320001 if you are in or near Asaba and do not know your district code. Six digits, no spaces. Avoid 23401 and 00000, which are not NIPOST codes and mean nothing to a sorting office even though most websites accept them.
If a foreign site rejects the code because it wants five digits, that is a validation fault on their end rather than a problem with your address. Enter the six digits wherever the form allows it, and never invent a shorter code for anything a bank, an embassy or a courier will check.
The New Code Coming in October
From 1 October 2026 Nigeria moves to a new 11 character postcode that identifies a single building rather than a sorting district. Delta’s four centre structure and its creek communities both benefit from a building level code, which does not depend on a delivery district being small enough to be meaningful.
Quick Facts
- Delta State head office code: 320001
- Range: 320001 to 334111
- Dispatch prefixes: 320, 321, 322, 330, 331, 332, 333
- Local Government Areas: 25
- Capital: Asaba
- New alphanumeric postcode: 1 October 2026
Frequently Asked Questions
What is the zip code for Asaba?
Asaba head office is 320001. All Delta codes begin 32 or 33, with the state range running to 334111.
What is the postal code for Warri?
Warri is served from the western blocks, in the 330 to 333 range. It is the state’s commercial centre and its districts carry most of the corporate post.
Is Asaba the same postal area as Onitsha?
No. They face each other across the Niger but Asaba is Delta State at 320 and Onitsha is Anambra State at 420. Mixing the two is one of the most common addressing errors in the region.
How many area codes does Delta have?
Four telephone area codes, 02052 for Warri, 02054 for Sapele, 02055 for Agbor and 02056 for Asaba. These are telephone codes and separate from postal codes.
How do deliveries work in the Delta creeks?
Post reaches a mainland or town office and the last stage is arranged locally, often by collection. Name the community, add a phone number, and expect the code to identify the office rather than the destination.
How many local governments does Delta have?
Twenty five, several of which are riverine and reached partly by boat.
Why do Delta codes start with 3?
The first digit is the postal region. Delta is in region 3 with Edo, Ondo and Ekiti, and Benin City holds that region’s anchor code.
What should I put on a form for a Delta address?
Use 320001 if you are near Asaba, or the head office code of the nearest of the state’s centres. Always include the town name in the written address.
Summary
Delta codes begin with 32 or 33 and run from 320001 to 334111. Asaba head office, 320001, is the capital’s code, but the state has four working centres rather than one, which is why it carries several postal blocks and four telephone area codes. Twenty five local governments include a riverine group where delivery depends on local arrangement.
Conclusion
Always name the town in a Delta address. Use 320001 for forms if you are on the Asaba side, and remember that Asaba and Onitsha are different states with different codes no matter how continuous the two towns feel.