Suisun City is a city in Solano County
, United States
. The population was 28,111 at the 2010 census. The city takes its name from the adjacent Suisun Bay, which in turn is named for the Suisunes, a Native American tribe of the area.The city is adjacent to Suisun Marsh, at 84,000 acres (34,000 ha) the largest contiguous estuarian marsh remaining on the west coast of North America
.Schools in Fairfield
and Suisun are operated by the Fairfield-Suisun Unified School District.