Down Postcodes — Northern Ireland (NIR)

County Down Places and PostCode / ZipCode List

Down County Post Code & Zip Code Category:

BT18 (...)

BT19 (...)

BT20 (...)

BT21 (...)

BT22 (...)

BT23 (...)

BT24 (...)

BT25 (...)

BT26 (...)

BT30 (...)

BT31 (...)

BT32 (...)

BT33 (...)

BT34 (...)

BT35 (...)

Description of Down

One of the thirty-two counties that make up the island of Ireland, County Down is also one of Northern Ireland's six constituent counties and Ulster's nine.

With a total size of 961 square miles (2,490 square kilometers) and a population of 531.665, it is the largest city in the country by both measures. It is bounded to the north by County Antrim, the east by the Irish Sea, the west by County Armagh, and the south by County Louth across Carlingford Lough.

Strangford Lough and the Ards Peninsula are located in the eastern part of the county. Bangor, located on the seashore in the north, is the major city. It has borders with County Armagh to the west, and Lisburn and Belfast to the north, both of which are major urban centers. Down is home to both the southernmost point in Northern Ireland (Cranfield Point) and the easternmost point in Ireland (Burr Point).

History of Down

Ptolemy claims that the Voluntii tribe settled in the area at the turn of the second century AD. Between the years 400 and 1177, County Down was an integral part of the Ulaid kingdom. The territory of Ulaid was frequently attacked by Vikings in the eighth and ninth centuries, but great local resistance prevented any Norse from settling there permanently. Retaliating for the Ulaiden's rejection to grant him asylum from Brian Boru the year before, Sigtrygg Silkbeard led a fleet on a series of raids across the region in 1001.

In 1177, the Normans attacked and took over the area. English and Scottish settlers began arriving in the area from the year 1180 and continued through the 1600s. In 1569, "An Act for converting of Countries that be not yet Shire Grounds into Shire Grounds" was passed by the Irish Parliament. With the help of this law, a commission was established in 1570 "to survey and make enquiry in the countries and territories... that are not shire ground, or are doubtful to what shire they belong; to limit and nominate them a shire or county; to divide them into countries, baronies, or hundreds, or to join them to any existing shire or barony."

Geography of Down

You can find the county's coastline on both Belfast Lough and Carlingford Lough (both of which have access to the sea). In between the Ards Peninsula and the main land is Strangford Lough. In addition, Down includes some of Lough Neagh's shoreline. Smaller loughs include Castlewellan Lake and Lough Island Reavy in the town of Castlewellan, Clea Lough in the town of Killyleagh, Lough Money and Loughinisland in the town of Downpatrick, and Silent Valley Reservoir, Ben Crom Reservoir, Spelga Dam, and Lough Shannagh in the Mourne Mountains.

County Antrim is separated from the rest of Northern Ireland by the Lagan River. A large portion of the county's southwest is located along the River Bann. The Clanrye and Quoile rivers are also nearby.

Mew Island, Light House Island, and the Copeland Islands are only a few of the many islands just off the Down coast, to the north of the Ards Peninsula. You can find Gunn Island just off the Lecale shore. In addition, Strangford Lough is dotted with several itty-bitty islets.