Spanish Lookout is a settlement in the Cayo District of Belize in Central America. According to the 2010 census, Spanish Lookout had a popu…Spanish Lookout is a settlement in the Cayo District of Belize in Central America. According to the 2010 census, Spanish Lookout had a population of 2,253 people in 482 households. Spanish Lookout is a community of Mennonites.