It is home to a Ramsar-recognized humid marsh and a Réghaïa lake having an area of 185 acres (75 hectares) and a length of 2.5 kilometers (1.6 mi).

In 1985, Reghaia, alongside Rouiba, Ain taya, Dergena and El Marsa were included to the newly created province of Boumerdes.

In the late 1990s, a considerable part of its area was then again cut out in order to, alongside the newly created municipalities of Boudouaou, El Bahri, Ouled Hadadj and Heraoua, be included back to the province of Algiers.

There is also the industrial park of Rouïba-Reghaïa which covers 1,000 hectares (2,500 acres) and employs a quarter of the active population.

The higher military school of the Air Defence Forces (école supérieure de la défense aérienne du territoire) is located here.