No structures were damaged or destroyed and evacuations have been lifted, the Vacaville Fire Department said.
The four-alarm grass and oak woodland fire was reported around 1 p.m. in the area of Oak Canyon Lane and Cherry Glen Road, Cal Fire said.
The Three Oaks Community Center in Vacaville opened for evacuees and reported only two people in mid-afternoon.
Mandatory evacuations were ordered for Acorn Court, Fair Oaks Drive, Grandview Drive and parts of Hillview Drive.
The fire's forward progress was stopped at 2 p.m. Firefighters will remain in the area through the evening and mop up hot spots, Cal Fire said.
Cal Fire said 61 personnel responded to the fire. The cause is under investigation and there were no injuries.
Bay City News contributed to this report.
All evacuation areas have been opened and the fire is no longer threatening residences. Thank you for your patience and support #vacapd— Vacaville Police (@VacavillePolice) July 22, 2016
Fire largely contained near homes along Alamo Drive. Excellent work by Vaca, Travis, Fairfield and Forestry fire crews #vacapd— Vacaville Police (@VacavillePolice) July 22, 2016