San Vallejo is a suburb of Arenas Dorados,  a major city of Bloxico. It is located in between the hillside plains of Mt. Santa Lucia. As of the 2024 census, the population was 68,716. It is the largest suburb of Arenas Dorados. It is notorious for its narcotics business, which then, is widely spread throughout Bloxico, and sometimes through Robloxia by Bloxas.