City
Fairfield
Fairfield is an incorporated city in Solano County with an estimated 2025 population of 122,489. It handles many rules and services inside its limits. The county still handles property records, taxes, courts, elections, public health, and many household programs.
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.
What changes the answer: A mailing city is not always the same as city government jurisdiction.
How local government works here
The city line changes some rules, but not every public office.
The mailing address can say Fairfield even when the property sits outside local limits. Check the city line before relying on a local rule or permit page.
City limits choose the local counter
Inside Fairfield, the city usually handles permits, zoning, parking, business licenses, and local code. Outside the city line, start with county planning or building.
The county still handles county work
Solano County handles property value and tax bills. It also handles deeds, court, elections, health, and many aid programs. Living inside Fairfield does not move those jobs to the city.
A provider can have its own boundary
Water, sewer, fire, schools, transit, trash, and power may belong to a special district or other provider. Use the address, parcel, or service bill to find the right agency.
Place answer
Fairfield's zone map and AlertSolano do different jobs
Genasys Protect identifies a Fairfield evacuation zone and its live status, while AlertSolano sends emergency notifications that use the same zone name.
Read the full explanation2025 population
122,489
Land area
41.586 sq mi
Water area
0.285 sq mi
Local front desk
Start with the task in front of you.
Fairfield is incorporated. Start with the city for work inside its limits, while Solano County still handles property records, taxes, courts, elections, many benefits, and county alerts. Solano County is the public-health layer.
- Property Open the property-tax path
Assessed value, exemptions, tax bills, and appeals
Solano County assessor handles value and exemptions. The clerk of the board handles a formal value appeal. The tax collector handles the bill, payment, and penalties.
- Records Open the records path
Deeds, birth and death records, marriage records, and name changes
Solano County recorder is the usual deed and public-record door. Vital-record access depends on the record and year. A legal name change or divorce decree can involve Superior Court.
- Property work Open the local-office path
Building permits, ADUs, zoning, code, water, and septic
Start with the city planning or building office for an address inside Fairfield. Start with the county for an address outside local limits.
- Housing Open the housing path
Rent rules, repairs, notices, and eviction papers
Start with a local rent, housing, or code office if one serves the address. Court papers go to the Superior Court self-help path, and the deadline on the papers keeps running.
- Household help Open the benefits path
CalFresh, Medi-Cal, CalWORKs, General Assistance, and IHSS
Solano County social-services agency is the main local door. Coverage, food, cash aid, and in-home support remain separate programs with separate notices.
- Public health Open the health path
Vaccines, disease reporting, health records, and local health programs
Solano County public health is the local health jurisdiction. Health coverage and benefits still use separate program doors.
- Business Open the business path
Business setup, seller's permits, local licenses, and regulated work
State filings and tax accounts do not replace Fairfield zoning, licensing, building, fire, or health approvals for the address.
- Neighborhood services Open official service requests
Potholes, streetlights, graffiti, trash, and service requests
For a city-owned street or service inside Fairfield, start with the local request system. County roads, Caltrans routes, utilities, private property, and separate service providers use different doors.
Browse city service-request systems - School and care Open the school and care path
School enrollment, student records, and child-care checks
The school district handles assignment and records. County offices can help with some family services, while the state licenses child-care facilities.
- Parking Open the parking path
Residential, guest, overnight, and local parking permits
A local parking permit is separate from a citation, moving ticket, and toll notice. Match the permit to the address, vehicle, district, or parking facility.
- Tickets Open the ticket path
Traffic court, parking citations, and toll notices
Solano County Superior Court handles traffic court matters. A city or issuing agency handles parking. The toll operator handles toll notices.
- Safety Open the emergency path
Emergency alerts, evacuations, smoke, roads, and power
Use the county or city alert system for local warnings. Follow the local emergency office for evacuation wording, then use the state fire, smoke, road, and utility sources for the matching layer.
Official city doors
Start local when the address is inside Fairfield.
The official website is always here. Direct service links appear only when the California Porch source trail supports them; an unlisted service has not been guessed.
County handoff
Keep the county layer close.
Fairfield does not replace the county for records, property taxes, courts, elections, benefits, public health, or county alerts. The official doors stay together below.
Solano County
Practical notes
Office, map, permit, and paperwork notes for Fairfield
Place answer · 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 answer · 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 answer · 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 answer · 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 practical note · Cars and driving · Reviewed July 7, 2026
Bay Area bridge tolls use FasTrak, plates, or invoices
Bay Area toll bridges use automatic toll collection, with FasTrak, License Plate Account, One-Time Payment, and invoice options depending on how the vehicle is set up.
County practical note · Rules and licenses · Reviewed July 3, 2026
A Solano County DBA starts with the County Clerk
Solano County fictitious business name filings start with the County Clerk and do not replace local license or permit checks.
Stories & Notes
Stories and local context in Solano County
Place story · 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 story · 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 story · 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.
Countywide story · Outdoors
Grizzly Island shows Solano County's marsh side
Grizzly Island Wildlife Area sits in the Suisun Marsh, with wetland views, wildlife watching, trails, fishing, and seasonal hunting.
County place story · History and culture
Mare Island keeps Vallejo's naval story in everyday view
Mare Island was the first U.S. naval station on the West Coast, and today Vallejo ties that history to reuse, businesses, trails, housing, schools, and open space.
County place story · 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.
County place story · 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 place story · 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.