[1] Baldoyle is located northeast of the city, and borders Donaghmede, which was formed from its western part, Portmarnock, Sutton and Bayside.

Baldoyle is mostly level coastal plains, with the Mayne River passing under the railway line through a bridge structure known as the "Red Arches" and crossing in its northern parts, and coming to the sea.

[4][5] Baldoyle village today has a coastal main street, with a Roman Catholic church, a community hall, a modern county library branch with sea views, and some shops and pubs.

Slightly inland, among the older suburban houses, is a small shopping precinct containing a Lidl supermarket, a football club, another Roman Catholic church, and other amenities.

On Grange Road towards Donaghmede is a light industrial estate, with more than forty businesses and the local An Post sorting and delivery office.

Businesses located there include major generic pharmaceuticals player Mylan, the largest tenant of the estate, Irish Papers, Grange Builders Providers, Ferrum Trading Co Ltd Steel Stockholders, Poolbeg Press, Curtis & Lees, Ireland's Eye Knitwear, Grange Electrical Wholesalers, Baldoyle Print and Forest Tosara, producers of Sudocrem (invented in Dublin).

[6] Baldoyle with its sheltered waterside location, was a Viking base for many years, eventually razed by an attack by the King of Leinster in 1012.

The lands of Baldoyle were later presented to the Priory of All Hallows, which had been founded by Diarmaid mac Murchadha in 1150, on the site that is now Trinity College Dublin.

By the 1500s, the area owned by the Priory at Baldoyle included gardens, arable land, pasture, a meadow, a copse, a warren, and woodland.

During the 1700s, Jonathan Swift was a frequent visitor to Baldoyle, who had a number of friends who lived in the area, including at Grange House.

The creek is formed between the mainland and the long tract of sand on the north of Howth, at the point of which, near that port, a white buoy is placed; it is fit only for small craft.

The manor was granted to the priory of All Saints, Dublin, by Diarmit, the son of Murchard, King of Leinster, who founded that house in 1166.The parliament mentioned above was held at Grange Church,[5] which was partly restored in the late 20th century[citation needed] after a period of neglect.

[7] A new enclosed course was opened in May 1874, which continued in regular use for almost a century, until it was closed in August 1972 due to financial difficulties related to the potential costs of necessary renovations.

[citation needed] For several years during the 1960s, Baldoyle Racecourse became the destination for annual sponsored charity walks, which were intended to raise funds for the Central Remedial Clinic.

[citation needed] Na Dubh Ghall are the local GAA club and have teams across all age groups catering for both girls and boys, and play at Racecourse Park.