The first non-native immigration into the region was of gold prospectors who moved into the area, but this was a short-lived adventure which by 1830 had been abandoned.

Soon after, Italian immigrants from the neighbouring municipality of Alfredo Chaves began to settle in Castelo.

Castelo is 145 km from the state capital Vitória, and stands at 100 meters above sea level.

[4] It also contains the 800 hectares (2,000 acres) Mata das Flores State Park, created in 1992.

[5] Castelo is strongly influenced by Italian immigrants, who make up the great majority of the municipality's population.