Ogun Postal Code: The 110 Blocks, All 20 LGAs and the Lagos Border Problem
Hundreds of thousands of people in Ogun State write Lagos on their address. The postal system disagrees. State codes begin 11, run to 122107, and 110001 is the Abeokuta head office code that belongs on those forms instead.
Ogun shares postal region 1 with Lagos and nothing else, which puts its codes among the lowest numbers in Nigeria. It also creates the state’s defining addressing problem, because hundreds of thousands of people who live in Ogun consider themselves, and address themselves, as living in Lagos.
Ogun State Postal Code at a Glance
| State capital | Abeokuta |
|---|---|
| Head office code | 110001 |
| Code range | 110001 to 122107 |
| Dispatch prefixes | 110, 111, 112, 120, 121, 122 |
| Local Government Areas | 20 |
| Postal region | Region 1 |
| Digits | Six, numeric only |
Reading a Ogun State Code
Take 110001, the Abeokuta head office code. The first digit, 1, puts the address in postal region 1. The first three digits, 110, 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 Ogun State code is built the same way, which gives you a quick test. If someone hands you a code for an address in Ogun State and it does not begin with 11, it is not a Ogun State code.
Dispatch Districts in Ogun State
Ogun’s dispatch blocks split the state along its two axes. The 110, 111 and 112 blocks cover Abeokuta and the western half of the state, while the 120 block serves the Ijebu and Sagamu side to the east. Between them they take in a state that has grown far faster along its Lagos border than around its own capital.
| Dispatch prefix | Codes it issues |
|---|---|
| 110 | 110001 to 110999 |
| 111 | 111001 to 111999 |
| 112 | 112001 to 112999 |
| 120 | 120001 to 120999 |
| 121 | 121001 to 121999 |
| 122 | 122001 to 122999 |
The 20 Local Government Areas in Ogun State
Ogun has 20 local government areas. The ones along the Lagos boundary, particularly Ado Odo Ota, Obafemi Owode and Ifo, now carry population densities closer to Lagos suburbs than to the rest of the state.
| Abeokuta North | Abeokuta South | Ado-Odo/Ota |
| Yewa North | Yewa South | Ewekoro |
| Ifo | Ijebu East | Ijebu North |
| Ijebu North East | Ijebu Ode | Ikenne |
| Imeko Afon | Ipokia | Obafemi Owode |
| Odeda | Odogbolu | Ogun Waterside |
| Remo North | Sagamu |
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 Ogun State contradict each other and sometimes contradict themselves.
The Expressway Corridor Problem
Mowe, Ibafo, Magboro, Arepo and the settlements along the Lagos Ibadan expressway are in Ogun State. Almost everyone living there works in Lagos, describes the address as Lagos, and enters a Lagos postal code on forms. The same happens on the western side at Sango Ota, Agbara and Ijoko, where the built up area runs continuously into Lagos with no visible boundary.
For a dispatch rider none of this matters. For anything that checks a code against a state, it matters a great deal. Banks doing address verification, courier systems that route by code, and government forms will all flag a Lagos code against an Ogun address. If you live on the corridor, your codes come from the Ogun blocks, whatever your neighbours write.
The Industrial West
Ado Odo Ota and the Agbara industrial estate hold one of the densest concentrations of manufacturing in Nigeria, and factories there generate corporate post at a scale the rest of the state does not. Those industrial estates tend to have reliable addressing, because a plant that receives shipments daily gets its address problems resolved quickly.
Universities, Abeokuta and Ijebu Ode
Ogun hosts more universities than any other state in Nigeria, and campuses generate steady institutional post. As everywhere else, campus mail is addressed to the department and the campus rather than to a district code, and the surrounding towns carry the codes.
Abeokuta itself, built around the Olumo rock and the old Egba quarters, has an addressing pattern closer to Ibadan than to the new corridor towns. Area names lead, streets follow. Ijebu Ode on the eastern side is a separate commercial centre with its own delivery districts and its own telephone area code, 02037, distinct from Abeokuta’s 02039.
If Your Address Is New or Unlisted
Recent developments are the weak point of any district based system, and Ogun State is no exception. A delivery district is drawn only when an area generates enough post to justify a round. A new estate is therefore absorbed into the nearest existing district rather than given one of its own. That means your code is real, but it belongs to the district next door rather than to your street.
Three things help. Use the code your delivery office gives you even if it seems to belong somewhere else, because that is the round your post is on. Put the estate name and the nearest main road in the address, since those carry the item the last kilometre. And keep a phone number on anything that matters, because in Ogun State as everywhere else in Nigeria, the last stage of delivery is a call rather than a code.
Boxes, Bags and When to Use One
The box number alone identifies nothing. It is the pairing of box and branch that tells the sorting office where the item ends up. A private mail bag works the same way, but it is issued to an organisation rather than a person. That is why ministries, universities and large companies publish a bag instead of a street address.
The layout looks like this:
P.O. Box 1234 Abeokuta Main Post Office 110001 Abeokuta Nigeria
Two practical notes. A box address is often more reliable than a street address in Ogun 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 Ogun State That Cannot Be Right
We compared the Ogun State code tables that circulate online against themselves. A code belongs to one delivery district, so if two local governments are published with ranges that share numbers, at least one of the two is invented. Ogun State fails that test in 3 visible places, and here are the clearest.
Ranges that swallow their neighbours:
- Ado-Odo/Ota at 112001 to 112272 overlaps Ewekoro at 112106 to 112106.
- Ado-Odo/Ota at 112001 to 112272 overlaps Ifo at 112104 to 112107.
- Yewa North at 111105 to 111109 overlaps Imeko Afon at 111104 to 111107.
None of this means the numbers themselves are fictional. They sit in the correct blocks for Ogun State. What is fictional is the neat range attached to a local government. That mapping was estimated by whoever first built the table, and every site that copied it inherited the estimate.
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 Ogun 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 Ogun State
Knowing the chain explains why the first three digits matter more than the last three. A letter posted anywhere in Ogun 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 1 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 Ogun State is forgiving, because a postman who recognises the street will deliver it regardless of the digits. Registered items, EMS parcels and anything arriving from abroad are different. Each transfer is handled against the code, so a wrong dispatch prefix 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 110001 is a safe fallback and a random six digits is not.
How to Write a Ogun State Address
An Ogun address near the Lagos border must name Ogun State explicitly, or it will be read as a Lagos address and coded wrongly.
The order NIPOST expects runs from the specific to the general, with the code on the same line as the town:
Mr B. Odusanya 9 Quarry Road Oke Ilewo 110001 Abeokuta Ogun 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 1
Ogun 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 Ogun State.
| State | Prefix |
|---|---|
| Lagos | 100 |
Finding the Code for Your Street
- Walk into the post office nearest your address and ask which district you are in. That answer beats any table on the internet, including this one.
- Search the NIPOST postcode finder by address rather than by local government.
- Where the delivery is informal anyway, use 110001, the Abeokuta head office code, which routes correctly across the state.
What to Put on Forms and Checkouts
Type 110001 if you are in or near Abeokuta 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
On 1 October 2026 NIPOST replaces this format with an 11 character code covering state, local government, district, area and building. Ogun is the state where building level codes will settle the most arguments, because the new format encodes the state explicitly and removes the option of quietly writing Lagos.
At a Glance
- Ogun State head office code: 110001
- Range: 110001 to 122107
- Dispatch prefixes: 110, 111, 112, 120, 121, 122
- Local Government Areas: 20
- Capital: Abeokuta
- New alphanumeric postcode: 1 October 2026
Frequently Asked Questions
What is the zip code for Abeokuta?
Abeokuta head office is 110001. All Ogun codes begin 11 or 12, with the state range running to 122107.
Is Mowe or Ibafo in Lagos or Ogun?
Ogun. The expressway corridor towns are in Ogun State despite functioning as Lagos suburbs, and their postal codes come from the Ogun blocks, not from Lagos.
What is the postal code for Sango Ota?
Sango Ota is in Ado Odo Ota local government and is served from the Ogun blocks beginning 11. It is not a Lagos code, even though the built up area runs straight into Lagos.
What is the postal code for Ijebu Ode?
Ijebu Ode sits in the eastern block serving the Ijebu division. It is a separate commercial centre from Abeokuta with its own delivery districts.
Why do Ogun codes start with 1 like Lagos?
Because both states are in postal region 1. The first digit is the region, and region 1 contains only Lagos and Ogun.
Does it matter if I use a Lagos code for an Ogun address?
For a bike delivery, no. For bank address verification, courier routing or any form that checks the code against the state, yes. It will fail the check.
How many universities are in Ogun State?
More than any other state in Nigeria. Campus post is addressed to the department and campus rather than by code, with the surrounding town code used for everything else.
Is the Ogun area code the same as the postal code?
No. Abeokuta’s telephone area code is 02039 and Ijebu Ode’s is 02037. The postal head office code is 110001.
What to Remember
Ogun codes begin with 11 or 12 and run from 110001 to 122107. Abeokuta head office, 110001, is the code for forms. The state shares postal region 1 with Lagos alone, and its biggest addressing issue is the corridor along the Lagos boundary where residents use Lagos addresses for places that are administratively and postally in Ogun.
Conclusion
If you live in Ogun, write Ogun. Use 110001 when a form needs a code and you do not know your district, name the state explicitly on every address near the border, and expect the new building level codes to end the ambiguity in October.
