Postal Code Finder
Geographic & Postal Directory / Ireland

Ireland postal codes by city, region and prefix

Search a structured directory of 139 geocoded records and 139 postal code values, move through the available regional hierarchy of Ireland and export the dataset in CSV, Excel or JSON when you need the full table.

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Verified data profile for Ireland

Based on 139 records, 139 postal code values and 139 mapped localities. Coordinate coverage is 100.0%.

139
Records
139
Postal identifiers
100.0%
Geocoded
A41
Example code
Postal code Locality Administrative path Coordinates
A41 Ballyboughal Leinster 53.5195, -6.2667
A42 Garristown Leinster 53.5661, -6.3856
A45 Oldtown Leinster 53.5253, -6.3156
A63 Greystones Leinster 53.1408, -6.0631
A67 Wicklow Leinster 52.975, -6.0494
A75 Castleblayney Ulster 54.1167, -6.7333

Related postal lookups

Arklow
Popular Lookup · 1 records
Ashbourne
Popular Lookup · 1 records
Athenry
Popular Lookup · 1 records
Athlone
Popular Lookup · 1 records
Browse by prefix
Postal code prefixes
Prefix D0
Postal code range · 9 records
Prefix D1
Postal code range · 9 records
Prefix A8
Postal code range · 6 records
Prefix A9
Postal code range · 5 records

Country postal code coverage

Use this page to understand country coverage, postal code formats, prefixes and the most useful child pages for lookup or download. The canonical route for this record set is /postal-codes/ireland.

Records
139
Database rows represented by this canonical route.
Postal identifiers
139
Distinct postal code values in this route.
Localities
139
Mapped place names or administrative entries.
Coordinate coverage
100.0%
Rows with latitude and longitude available.
Detected format
Alphanumeric, 3-3 characters
The detected records use alphanumeric postal codes without a required space separator.
Example
A41
Sample code from Ballyboughal.
Code Place Hierarchy Coordinates
A41 Ballyboughal Leinster 53.5195, -6.2667
A42 Garristown Leinster 53.5661, -6.3856
A45 Oldtown Leinster 53.5253, -6.3156
A63 Greystones Leinster 53.1408, -6.0631
A67 Wicklow Leinster 52.975, -6.0494
Download postal data
CSV, JSON and XLSX exports for research, validation and data products.
Use the API
Query postal codes by country, place name, region or code prefix.
Implementation notes
Field definitions, canonical paths and practical lookup guidance.

Useful related pages

Arklow
Popular Lookup · 1 records
Ashbourne
Popular Lookup · 1 records
Athenry
Popular Lookup · 1 records
Athlone
Popular Lookup · 1 records
Browse by prefix
Postal code prefixes
Prefix D0
Postal code range · 9 records
Prefix D1
Postal code range · 9 records
Prefix A8
Postal code range · 6 records
Prefix A9
Postal code range · 5 records

Data questions

What is included in the Ireland postal code page?

The page combines postal code lookup, regional browsing, prefix navigation, examples and country-level download links.

Can I download Ireland postal codes?

Yes. The country page links to CSV, Excel and JSON exports for offline validation and analysis.

How should I validate a Ireland postal code?

Compare the code with its country, locality and administrative hierarchy instead of checking the code alone.

Search administrative database

🔍

Navigate & Browse Geographic Distributions

How to use: Click on any marker to explore the detailed registry for that specific region. Data points represent approximate centroids of administrative localities, not delivery routes or exact address points.

Understanding postal codes in Ireland

Format Alphanumeric, 3-3 characters
Example A41
Logic The detected records use alphanumeric postal codes without a required space separator.
Coverage 139 postal identifiers, 139 localities and 4 primary regions. Geocoded coverage: 100.0%.

People search for Ireland data using terms such as postal code, postcode, ZIP code. This page keeps those lookups tied to one canonical hierarchy instead of splitting the same data across duplicate URL variants.

Primary Regional Divisions

Explore the top-level administrative jurisdictions of Ireland. Each region groups available localities, districts or postal identifiers from the reference dataset.

View key regions →

High-Density Hubs

Arklow Ashbourne Athenry Athlone Athy Bagenalstown Balbriggan Ballina Ballinasloe Ballincollig Ballinrobe Ballyboughal Ballyhaunis Ballymote

Browse Ireland by postal code prefix

Prefix pages help when you already know the first digits or letters of a postal code. They group matching codes with locality and coordinate context.

All prefixes D0 · 9 codes D1 · 9 codes A8 · 6 codes A9 · 5 codes

Explore Regional Subdivisions

Showing 0 linked regions from 0 available country divisions. A locality represents a unique combination of administrative name and geocoded coordinates.

Data Exports

Bulk geodata for Ireland including administrative centroids and postal identifiers.

Download XLSX CSV Export JSON export
Contents: ISO-3166-2, Admin Levels 1-3, Postal Identifiers, Decimal Lat/Lng.

JSON lookup access

Use the country page, search endpoint and token-protected JSON export to integrate Ireland lookup data into your applications.

GET /search?q={city_or_code}&country=IE
Explore Documentation →

Geographic Data Questions

What are postal codes in Ireland?

Postal codes in Ireland are standardized identifiers used by the national postal service and logistics providers to simplify mail sorting and delivery.

How can I find a postal code by city or region?

Search for the city, town or administrative region in our lookup tool to retrieve verified postal identifiers, coordinates and hierarchy details.

Why do some cities in Ireland have multiple postal codes?

Large urban centers are often partitioned into multiple postal districts to support denser routing and operational capacity.

Are postal codes in Ireland valid for shipping and online forms?

Yes. The postal codes exposed here are extracted from institutional datasets and can be used for shipping, address validation and operational workflows.

Can postal codes change over time?

Yes. Postal codes can change because of urban growth, administrative rezoning or postal network adjustments, so the dataset is refreshed periodically.

Can I download postal code data for Ireland?

Yes. Structured datasets for Ireland are available in CSV, Excel and JSON formats with geocoded centroids and administrative fields.