AutoAddress Delivery Zones in Limerick.
There are lots of different boundary datasets available for Ireland, official boundary data is available as Open Data from data.gov.ie. In all there are 90 data publishing organisations and over 4,000 datasets on the site, and this number is increasing every week.
In addition to official boundaries many organisations apply intelligence to their location data, defining their own trading areas, catchments, franchise territories, service zones and so on. In short, there are an infinite number of ways of dividing up the country.
One of the crucial aspects of Eircode is that it a point based dataset. Every Eircode has a grid-coordinate. That means that no matter which boundary dataset is used you can aggregate your eircoded data into it. That is something which is simply not possible with area based postcode systems, such as that used in the UK, or with grid based systems either.
We have built a dataset of Eircode Routing Key boundaries from the SA dataset, they can be downloaded from here.
Please note these are not official boundaries, An Post do not use boundaries to define a Routing Key for a property.
This is a short version of a Gamma White Paper on Boundaries which can be viewed here.