Wikipedia
A Neo-Gaeltacht is an area where Irish has a strong presence as a spoken language but is not part of the officially defined or traditional Gaeltacht areas. It has been argued that non-Gaeltacht activist groups wishing to establish an Irish language community need to show that it is large, permanent and formally organized and that it has a growing number of people using Irish as their first language. Another objective is a situation in which children use Irish among themselves and with other Irish speakers in a natural way while being able to deal with a largely English-speaking world.
The Republic of Ireland's Department of Arts, Heritage and the Gaeltacht has said that areas outside the traditional Gaeltacht areas may be designated as Gaeltacht areas, subject to them fulfilling particular criteria.