It is a municipality of the Priorat County, situated in the east side of it, at the right side of the Montsant river that forms the east boundary of the county. The township has an area of 6.80Km². It is mountainous and rugged, and its relief is composed by a lot of mountain ranges. The most important mountain is the Moleta, which goes from the north to the south through the township. It is 560 metres high.

Two kilometres far from the village, it is the Cingle de la Roca, where many cliffs are born and tent to fall to the Montsant River.

The village is at a height of 219 metres, and it is the only municipality of the township.

The most important economic activity in El Lloar is the agriculture. The most abundant crop is the vineyard, followed by the olive and almond trees mainly in the unirrigated lands. There is a small area with vegetable gardens for private consumption. Another complement is the presence of some poultry farms. The wine that is produced there belongs to the "Denominació d'Origen Priorat" (a quality property).

The Agricultural Cooperative was founded in 1939 under the name of "Sindicat Agrícola".