Balzar is a city located in northern Guayas Province, Ecuador, on the Daule River, near Los Ríos Province. It is the seat of Balzar Canton, …Balzar is a city located in northern Guayas Province, Ecuador, on the Daule River, near Los Ríos Province. It is the seat of Balzar Canton, and the agricultural center in northern Guayas. As of the census of 2022, the city had a population of 32,744.