Oral tradition suggests MacCullin may have either lived in or been buried in a cave and that the name "Lusk" derives from an old Irish word Lusca meaning 'cave' or 'underground chamber'.

[3] The area was known as Bregia in pre-Christian times and was said to have been the birthplace of Cú Chulainn's wife, Emer in Irish mythology.

The ruins of St. Maur's original church, or more likely its later replacement, are at the top of Whitestown hill, firmly in the parish of Rush.

Lusk was plundered and burned several times in the 8th and 9th centuries by marauding Vikings, who eventually built a permanent settlement at Dubh Linn, now Dublin.

Fingal is considerably older than Dublin City, which was established by the Norsemen c. 900 AD around the 'dubh linn' or black pool.

Before Christendom and St. MacCullin, the area was the Celtic "Bregia", the birthplace of Cú Chullain's wife, Emer whose clan resided in or near what we now know as Lusk.

[7] To facilitate the increased population in this part of north county Dublin a new, larger, state-of-the-art post office was opened in 2016.

[citation needed] According to the Central Statistics Office, 62% of all private dwellings in Lusk were built in the five years between 2001 and 2006.

There were two overriding concerns that prompted a public backlash: the lack of cavity barriers in walls and the non-existence of special intumescent paint.

[14] Lusk Community Council Ltd (LCC) was set up to look after the village and liaise with local government and councillors.

In October 2022 they opened Lusk Community Cultural Centre which was a complete rejuvenation of what was once Katie Hunts cottage and shop.

Also in his memory, the Martin Finnegan Trophy is awarded to the fastest lap by an Irishman at the Isle of Man TT.

Fingal Express is a privately owned coach service from Skerries, Rush and Lusk to Dublin City Centre and UCD.

On 27 April 2011, a delegation of 27 visitors from the Breton region arrived in Lusk and was greeted by the Mayor of Fingal, Cllr Ken Farrell.