County Dublin, in Leinster Province, adjoins the Irish Sea.
The terrain is generally flat, except in the extreme
southern portion, which contains the northern extremities
of the Wicklow Mountains.
The county coastline, about 113 km (about 70 mi) long, is
indented by a number of creeks and bays, notably Dublin
Bay, formed by the Howth Peninsula on the north. Dublin Bay
receives the waters of the Liffey River, the only stream of
consequence in the county. Several islands, including
Lambay and Ireland's Eye, are attached to the county for
The county has numerous small farms, the chief products of
which are cattle, oats, and potatoes.
The fishing industry is important, producing valuable
catches of salmon, brill, cod, haddock, sole, plaice, and
Industrial production is confined largely to Dublin,
capital of the Republic of Ireland chief seaport of the
county. Among the principal towns are D�n Laoghaire,
Balbriggan, and Skerries. In 1985, Dublin County was
subdivided into three new electoral counties:
Dublin-Belgard, Dublin-Fingal, and D�n Laoghaire-Rathdown.