County of Antrim

A maritime county in the extreme north-east of Ulster, bounded on the north by the Atlantic Ocean; on the east by the North Channel; on the south-east and south by County Down; and, on the west by counties Tyrone and Londonderry.

Its boundary over all the south-east and south, excepting five miles adjacent to Lough Neagh (the largest lake in the British Isles), is formed by Belfast Lough and the River Lagan; and, over all the west, excepting seven miles adjacent to the ocean, is formed by Lough Neagh and Lough Beg, and the River Bann.

The county is thus clearly insulated between a sweep of the sea and an alternate chain and line of fresh water.

Its greatest length, from Bengore Head (near the Giant's Causeway) on the north to Spencer's Bridge on the south, is about 42 miles.

Its greatest breadth, from The Gobbins on the east to Toome on the west is about 24 miles.

Trostan, at 1,808 feet, is the highest mountain.

The county's area is approximately 745,000 acres.

First published in January, 2018.  Select bibliography ~ Parliamentary Gazetteer of Ireland. 1841.