The annual population growth rate is 1.57%. Some of the 43 metropolitan districts are considerably more populous than others. For example, San Juan de Lurigancho, San Martin de Porres, Ate, Comas, Villa El Salvador and Villa Maria del Triunfo host more than 400,000, while San Luis, San Isidro, Magdalena del Mar, Lince and Barranco have less than 60,000 residents.