For Mompox, the Paraguayan peasant leader, see Revolt of the Comuneros. Santa Cruz de Mompox — Municipality — View of Mompox from the Magdalena River Flag of Santa Cruz de Mompox Official seal of Santa Cruz de Mompox Municipality and town of Mompox in the Bolivar Department. Country 22x20px Colombia Region Caribbean Region Department Bolivar Department Foundation May 3, 1540 Government • Mayor Edilberto Arévalo Montesino Elevation 10 m Population (2005 est.