Roofer in Fairfield, CA

According to the City of Fairfield website, Native Americans, such as those from the Ion culture, settled in the Rockville and Green Valley areas. Artifacts that have been found from some of the earliest human inhabitants of the Fairfield area are dated to be around five to six thousand years old, making them some of the oldest Native American settlements in Northern California.

The first European contact came in 1810 when the Spanish army was ordered to attack the Suisun Indians. In 1835 the Mexican General Vallejo was so magnanimous in victory over the Indian Chief Sem Yeto that the chief later became his ally in conflicts against other tribes. In 1837 the Indian Chief Solano received the Rancho Suisun Mexican land grant. This grant eventually came into the hands of a clipper ship captain from Fairfield, Connecticut named Robert H. Waterman. He not only parceled out the town in 1856, but also, in a commercially shrewd move, entered Fairfield in the race for Solano County seat in 1858, and won it from Benicia. As an inducement he granted 16 acres (6.5 ha) of land for the construction of county buildings. In 1903 Fairfield was incorporated as a city.

In August 2020, parts of Fairfield were evacuated due to the Hennessey Fire, which resulted in the burning of over 315,000 acres (127,476 ha) in five counties, including in nearby Vacaville.