A geo-genealogy of Irish surnames

This post may contain affiliate links. As an Amazon Associate, we earn from qualifying purchases.

The Irish surnames on this map have either historic or numeric importance to the counties of Ireland. Indigenous Irish names beginning with O’, Mac, Mc, De, Le, and others indicate historical significance.

The map below gives a visual representation of the spatial and quantitative distribution of birth data from the 1890 Irish census population. The 1890 census contained over 2,500 individual surnames. The birth data identified the surname of every child born by county.

Below is the interactive map of Irish Surnames.