– Mers SultanMaarif is a district of Casablanca, in the Casablanca-Settat region of Morocco. The district covers an area of 17.9 square kilometres and as of 2004 had 332,682 inhabitants.SubdivisionsThe district is divided into two arrondissements and one municipality:Mers sultan Maarif, containing the municipality of Maarif, Casablanca|