What County Is My Postcode In?

Figuring out which county a UK postcode belongs to is not as straightforward as it sounds. The UK has several overlapping systems of counties, and a postcode can sit in different "counties" depending on which system you use. This tool shows you the full picture: the ceremonial county, administrative county (where applicable), local authority district, ward, and region.

Ceremonial Counties

Ceremonial counties (also called lieutenancy areas) are the traditional counties most people think of when they hear "county". There are 48 in England. These are the counties where a Lord Lieutenant is appointed, and they are the ones used in postal addresses historically. Examples include Lancashire, Yorkshire, Kent, and Devon. Ceremonial county boundaries haven't changed much over the decades, which is why they feel familiar.

Administrative Counties

Administrative counties are the working units of local government. In areas that still use a two-tier council system, the administrative county (like Lancashire County Council) sits above district councils (like Burnley Borough Council). The administrative county handles education, highways, social services, and planning strategy. Not all areas have an administrative county. Metropolitan boroughs, unitary authorities, and London boroughs answer directly to central government without a county council layer.

Unitary Authorities

Many parts of England have replaced the two-tier system with a single unitary authority that handles all council functions. When this happens, the "county" field in the postcode database is often blank, which is why some postcodes appear to have no county. The local authority district is the council that actually runs things. This tool maps these authorities back to their ceremonial county so you always get an answer.

Metropolitan Boroughs

The six metropolitan counties (Greater Manchester, West Midlands, West Yorkshire, South Yorkshire, Merseyside, and Tyne and Wear) were abolished as administrative units in 1986. The metropolitan boroughs within them (like Bury, Birmingham, Liverpool) now operate as independent authorities. However, the metropolitan county names are still widely used and recognised. This tool shows both the borough and the metropolitan county.

London Boroughs

Greater London contains 32 boroughs plus the City of London. These are all unitary authorities. The ceremonial county is Greater London, but people more commonly identify with their borough (Camden, Hackney, Greenwich, etc.). London postcodes often cross borough boundaries, so the borough shown is based on where the postcode centroid falls.

Why Does This Matter?

Addresses and Mail

Royal Mail no longer requires a county in postal addresses. The postcode and town are enough for delivery. However, many forms, databases, and systems still ask for a county. Knowing the correct one avoids errors and rejection in address validation systems that check county against postcode.

Council Services

If you need to contact the right council about planning, council tax, waste collection, or parking permits, you need to know your local authority, not just your county. A postcode in M26 falls under Bury Council, which is the authority responsible for local services, even though the ceremonial county is Greater Manchester.

Insurance and Finance

Insurance premiums, mortgage valuations, and credit checks all reference geographic data tied to postcodes. The county and local authority affect council tax bands, flood risk zones, and crime statistics that feed into these calculations. Knowing exactly which authority area your postcode sits in helps you understand why your premiums are what they are.

Schools and Education

School admissions are managed by local authorities, not counties. If you live near a council boundary, knowing which authority your postcode falls under tells you which council handles your school applications. This matters because neighbouring authorities can have different admissions timelines, policies, and catchment rules.

Elections and Constituencies

Your local council ward (shown in the results) determines who your local councillors are. The local authority determines your council. These don't always align neatly with county boundaries, which is why checking your specific postcode gives a clearer answer than assuming based on your town name.

Scotland, Wales and Northern Ireland

Scotland uses council areas (like City of Edinburgh, Glasgow City, Highland) rather than the English county system. Wales has 22 principal areas (like Cardiff, Swansea, Gwynedd). Northern Ireland has 11 local government districts. These all function as unitary authorities. The tool returns the correct local authority and country for postcodes in all four UK nations, though the ceremonial county mapping is primarily relevant to England.

Common Confusion

The most common source of confusion is postcodes in metropolitan boroughs showing no county. If you search for a Manchester postcode and the county field is blank, that's because Greater Manchester was abolished as an administrative county in 1986. The borough (e.g. Bury, Salford, Trafford) is the actual local authority. This tool fills in the gap by showing Greater Manchester as the ceremonial county.

Another common issue is postcodes near county boundaries. Some postcodes sit right on the edge and the town associated with them might be in a different county to the one the postcode data says. This usually happens because postcode boundaries were drawn for mail delivery, not administrative geography. The local authority shown is always based on the official ONS data for that postcode.