City
Fairfield
Fairfield is a city record. City or town offices may handle local rules inside their limits, while county offices still handle records, taxes, courts, and many services.
Starting point
Confirm the address is inside local limits first.
If the address is inside Fairfield, city or town offices may handle local permits, code, and services. If it is outside limits, county routing may be the better first stop.
A mailing city is not always the same as city government jurisdiction.
2025 population
122,489
Land area
41.586 sq mi
Water area
0.285 sq mi
Directory notes
Local layers to keep on the same page.
Confirm city or town limits.
A mailing address can use a nearby place name. If the address is outside limits, county offices may handle permits, code, and land-use routes.
County still matters.
Solano County can still matter for assessor, tax collector, recorder, court, public health, social service, and election records.
Some layers are separate.
Water, sewer, fire, school, utilities, coast, earthquake maps, wildfire zones, parks, and trails may point outside city hall.
County layer
County shown for Fairfield
Practical notes
Office, map, permit, and paperwork notes for Fairfield
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 · 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.
Place note · Rules and licenses · Reviewed July 3, 2026
Fairfield building permits move through BUILD Online
Fairfield BUILD Online is the city path for permit applications, plan uploads, invoices, inspections, and permit tracking.
Place note · Home and property · Reviewed July 3, 2026
Fairfield water and sewer bills have a few different payment paths
Fairfield water and sewer customers can use city utility pages for starting service, paying bills, leak adjustments, cash payment options, and water-system information.
County layer · 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.
Almanac notes
Stories and local context near Fairfield
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
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 · Outdoors
Rockville Hills gives Fairfield oak shade and volcanic rock
Rockville Hills Regional Park near Fairfield has grasslands, oak woodlands, volcanic rock, trails, picnic use, and simple day-use details to check first.
County layer · 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.
County layer · 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.
County layer · 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.
County layer · 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.
County layer · 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.