In 841, Benearnum was razed by the Vikings and Morlaàs became the Béarnaise capital. However from the 12th century a new city grew up at Lescar. Lescar Cathedral was built during this period, and was the seat of the Diocese of Lescar until 1801.
Today, Lescar is primarily a suburb of the nearby town of Pau. It lies within the département of Pyrénées-Atlantiques and the arrondissement of Pau. It is the chef-lieu of the canton of Lescar. The commune of Lescar has joined together with 13 neighbouring communes to establish the communauté d'agglomération of Pau-Pyrénées which provides a framework within which local tasks are carried out together.