About Vacaville

Vacaville is a city located in Solano County in Northern California. Sitting approximately 35 miles (56 km) from Sacramento and 55 miles (89 km) from San Francisco, it is within the Sacramento Valley but is also considered, at least by some agencies, to be part of the San Francisco Bay Area. As of the 2020 census, Vacaville had a population of 102,386, making it the third largest city in Solano County. == History == Prior to European contact, the indigenous Patwin tribe lived in the area with the Ululato tribelet establishing a chiefdom around the Ululato village in what is now downtown Vacaville along the Ulatis Creek.The early settler pioneers of the land were Juan Manuel Cabeza Vaca and Juan Felipe Peña who were awarded a 44,000-acre (18,000 ha) Mexican land grant in 1842. The same year in 1842, Vaca and Peña's families settled in the area of Lagoon Valley.