Leinster is in the southeast of Ireland, and is the most populous of the four provinces, with approximately 1,500,000 people. This province contains the counties of Carlow, Dublin, Kilkenny, Laois (formerly Leix), Longford, Louth, Meath, Offaly, Westmeath, Wexford, and Wicklow. These divisions have remained the same from the Middle Ages to the present.