County Leitrim is a county

Counties of Ireland

The counties of Ireland are sub-national divisions used for the purposes of geographic demarcation and local government. Closely related to the county is the County corporate which covered towns or cities which were deemed to be important enough to be independent from their counties. A county...

 in Ireland

Republic of Ireland

Ireland , described as the Republic of Ireland , is a sovereign state in Europe occupying approximately five-sixths of the island of the same name. Its capital is Dublin. Ireland, which had a population of 4.58 million in 2011, is a constitutional republic governed as a parliamentary democracy,...

. It is located in the West Region

West Region, Ireland

The West Region is a NUTS Level III region of Ireland and is governed by the West Regional Authority. It consists of the area under the jurisdiction of the county councils of counties Galway, Mayo and Roscommon, along with Galway City Council. The West region spans 13,801 km², 20% of the total area...

 and is also part of the province

Provinces of Ireland

Ireland has historically been divided into four provinces: Leinster, Ulster, Munster and Connacht. The Irish word for this territorial division, cúige, literally meaning "fifth part", indicates that there were once five; the fifth province, Meath, was incorporated into Leinster, with parts going to...

 of Connacht

Connacht

Connacht , formerly anglicised as Connaught, is one of the Provinces of Ireland situated in the west of Ireland. In Ancient Ireland, it was one of the fifths ruled by a "king of over-kings" . Following the Norman invasion of Ireland, the ancient kingdoms were shired into a number of counties for...

. It is named after the village of Leitrim

Leitrim, County Leitrim

Leitrim is a village in County Leitrim, Ireland.-Access and transport:It is located on the River Shannon at the junction of the R280 and R284 regional roads and is connected to the River Erne via the Shannon-Erne Waterway. Leitrim village is the gateway to the Shannon-Erne Waterway and boasts a...

. Leitrim County Council

Leitrim County Council

Leitrim County Council is the local authority which is responsible for County Leitrim in Ireland. The Council is responsible for Housing and Community, Roads and Transportation, Urban planning and Development, Amenity and Culture, and Environment....

 is the local authority

Local government in the Republic of Ireland

Local government functions in the Republic of Ireland are mostly exercised by thirty-four local authorities, termed county or city councils, which cover the entire territory of the state. The area under the jurisdiction of each of these authorities corresponds to the area of each of the 34 LAU I...

 for the county. The population of the county is 31,778 according to the 2011 census.
Leitrim is the 26th largest of the 32 counties by area and the smallest by population. It is the smallest of Connacht’s 5 counties in both size and population.