Boaco () is a department in Nicaragua. It was formed in 1938 out of part of Chontales Department. It covers an area of 4,177 km2 and has a population of 186,284 (2021 estimate). The capital is the city of Boaco. Indigenous peoples are the Nahuas and Sumos. Municipalities Boaco Camoapa San José de los Remates San Lorenzo Santa Lucía Teustepe References Departments of Nicaragua States and territories established in 1938