County
Solano County
This is the county layer. It is often the first stop for assessor, tax collector, recorder, court, social service, election, health, sheriff, and unincorporated-area services.
Starting point
Start with the county layer.
County offices are the usual first stop for records, taxes, courts, elections, public health, social services, sheriff services, and unincorporated-area routing.
Cities inside the county can still control city permits, local code, utilities, business licenses, and city-specific rules.
2025 population
455,376
Land area
821.738 sq mi
Water area
84.406 sq mi
Directory notes
Local layers to keep on the same page.
Property, taxes, and records
For assessed value, exemptions, ownership records, recording, and tax bills, county offices are usually the starting layer.
Unincorporated land
If an address is outside city limits, county planning, building, environmental health, fire, or public works may handle local permits and code work.
Courts, services, and alerts
Superior court, sheriff, elections, social services, emergency alerts, and health offices often start at the county level.
Practical notes
Office, map, permit, and paperwork notes for Solano County
Place note · Cars and driving · Reviewed July 6, 2026
Fairfield FAST mixes fixed routes with FAST Connect
Fairfield's FAST system combines fixed local bus routes, on-demand FAST Connect zones, real-time arrivals, and trip-planning tools.
Place note · Cars and driving · Reviewed July 6, 2026
Vacaville City Coach has routes plus on-demand City Coach Direct
Vacaville City Coach includes fixed routes, City Coach Direct on-demand rides, paratransit, taxi scrips, and rider tools like Ride Pingo.
Place note · Home and property · Reviewed July 6, 2026
Vacaville splits utility billing from water and sewer questions
Vacaville residents use Utility Billing for water and sewer bills, but water and sewer service questions go through the Utilities Department contact paths.
Place note · Cars and driving · Reviewed July 6, 2026
Vallejo SolTrans has local and express layers
SolTrans gives Vallejo riders local routes, express options, day-pass fare tiers, youth fares, reduced fares, alerts, and customer service in one transit system.
Place note · Home and property · Reviewed July 4, 2026
Fairfield residents should know their zone and AlertSolano setup
Fairfield's emergency pages use evacuation zone names with AlertSolano, giving residents a simple way to connect an address with local emergency messages.
Place note · Rules and licenses · Reviewed July 4, 2026
Fairfield service requests can start in MyFairfieldCA
Fairfield's MyFairfieldCA portal sends local questions, complaints, and compliments to city staff, with categories for common public issues.
Almanac notes
Stories and local context near Solano County
Place note · History and culture
The Jelly Belly factory gives Fairfield a sweet factory-tour stop
Fairfield's Jelly Belly Visitor Center connects candy history, self-guided factory tours, a public tour lane, and a family-friendly stop near I-80.
Place note · History and culture
The Vacaville Museum widens the story beyond one town
The Vacaville Museum preserves Solano County history and culture, giving Vacaville a local doorway into farms, towns, families, and change across the county.
Place note · History and culture
Vallejo's old City Hall holds a Navy town's memory
The Vallejo Naval and Historical Museum connects local life with Mare Island, U.S. Navy history, city stories, and downtown heritage.
Place note · History and culture
Dixon May Fair keeps an old farm-town tradition alive
Dixon May Fair connects the city to California fair history, agriculture, community events, nearby Solano and Yolo County towns, and a long-running local gathering.
Place note · History and culture
Rio Vista kept its river-view name after moving to higher ground
Rio Vista began near Cache Slough, later moved to higher ground, and grew into a Sacramento River Delta town with a bridge, fishing, and river traffic.
Place note · History and culture
Travis gives Fairfield a major airlift story
Travis Air Force Base began as Fairfield-Suisun Army Air Base in World War II, and the Heritage Center helps connect Fairfield to aircraft, airlift, and Pacific history.
Place note · History and culture
Vallejo was part of California's floating capital years
Before Sacramento became permanent, California's capital moved through several cities, and Vallejo twice held the Legislature while the young state searched for a workable home.
Place note · History and culture
Benicia's Arsenal turns old military ground into a layered district
The Benicia Arsenal Historic District ties the city's waterfront history to old military buildings, the Carquinez Strait, World War II-era changes, artists, studios, and reuse.