IE 45
The IE 45 postcode zone is centred around Castlerea. It represents 6 postcode-locality records in the source data.
The reference centre is calculated from available postcode locations and is not an official administrative boundary.
Using IE 45 in logistics
Freight planners commonly use leading postcode characters to describe a broad collection or delivery area. The IE 45 prefix gives a quick geographic reference around Castlerea, while the interactive map helps teams compare it with other European regions.
Always confirm the complete postcode, street and delivery address before pricing, routing or dispatching a vehicle. Prefix zones are planning references and may not follow administrative boundaries.
Reference data: GeoNames postal code files. Reviewed 19 August 2026.