As is true across El Salvador, most of Jayaque's residents are Catholic. Celebrations are held every year in July to honor Jayaque's patron saint, Saint Christopher. Together with their nearby sister community of Cuisnahuat and the residents of Tepecoyo, the people of Jayaque celebrate the Festival of "Los Cumpas" (a colloquialism designated to represent the companionship between sister cities). Some Protestant churches have also been established, however, with the most significant growth of Protestantism occurring during and after the civil war.