OS NI Postcodes

OS NI Postcodes delivers a unified view of postcode geography across Northern Ireland. The dataset includes a representative point for every postcode unit enabling clear and consistent geographic insight.


This product is updated monthly

Data access
  • Download
Data structure
  • Vector
Scale/resolution
1:1 250 to 1:10 000
Format
  • CSV
  • GeoPackage

Try this product with free sample data

Download a small area of OS GB Postcodes which has the same schema. Or try out the real thing by applying for a Data Exploration Licence.

What OS NI Postcodes provides you with

Consistent postcode point locations

OS NI Postcodes provides a clear, representative location for every postcode unit across Northern Ireland. This helps users map patterns, understand coverage, and see how postcodes connect to real‑world places.

Flexible access and up‑to‑date information

Monthly updates reflect the latest changes across Northern Ireland and a flexible access interface saves time by allowing users to configure format, projection, and spatial extent, as well as filter records by chosen attributes.

Full national coverage

Every postcode unit in Northern Ireland is consistently represented. Understand the split of residential and commercial delivery points within a postcode area, for a greater depth of analysis.

Use cases

Consistency in decision making

OS NI Postcodes helps both public and private sector organisations produce consistent results across teams and systems. It supports more trusted decision‑making in sectors like planning, utilities, logistics, and local government.

Model population distribution and service demand

The dataset can be visualised and styled to reveal patterns in population density and service usage. Organisations can measure customer concentrations, anticipate demand on local networks, evaluate service eligibility, and plan routes or service provision around accurate postcode areas.

Supporting land and property operations across NI

OS NI Postcodes provides valuable insight for public and private organisations managing land and property assets. Insurers, lenders, and utilities can assess risk, maintain networks and meters, manage property portfolios, and keep title and asset records accurate.

OS NI Postcodes delivers a unified view of postcode geography across Northern Ireland. The dataset includes a representative point for every postcode unit enabling clear and consistent geographic insight.


This product is updated monthly

Data access
  • Download
Data structure
  • Vector
Scale/resolution
1:1 250 to 1:10 000
Format
  • CSV
  • GeoPackage