Languedoc-Roussillon region, France, satellite image. North is at top. Vegetation is shown in green, water in blue, and urban areas in grey. Languedoc-Roussillon (highlighted) is an administrative region in southern France which borders with Spain in the south-west. The Mediterranean Sea lies to the south. The region has a population of around 2.5 million (2005). Its capital is Montpellier, which is towards the northern end of the coastline.