City
Costa Mesa
Costa Mesa is an incorporated city in Orange County with an estimated 2025 population of 108,881. 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 Costa Mesa, 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 Costa Mesa 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 Costa Mesa, 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
Orange County handles property value and tax bills. It also handles deeds, court, elections, health, and many aid programs. Living inside Costa Mesa 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
Costa Mesa 311 is the simple door for city service requests
Costa Mesa 311 lets residents submit, track, and view city service requests online or by app, including graffiti removal, pothole repairs, and other city service needs.
Read the full explanation2025 population
108,881
Land area
15.806 sq mi
Water area
0.009 sq mi
Local front desk
Start with the task in front of you.
Costa Mesa is incorporated. Start with the city for work inside its limits, while Orange County still handles property records, taxes, courts, elections, many benefits, and county alerts. Orange County is the public-health layer.
- Property Open the property-tax path
Assessed value, exemptions, tax bills, and appeals
Orange 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
Orange 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 official city planning
Building permits, ADUs, zoning, code, water, and septic
Start with the city planning or building office for an address inside Costa Mesa. Start with the county for an address outside local limits.
Browse planning and building offices - 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
Orange 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
Orange County public health is the local health jurisdiction. Health coverage and benefits still use separate program doors.
- Business Open official business licensing
Business setup, seller's permits, local licenses, and regulated work
State filings and tax accounts do not replace Costa Mesa zoning, licensing, building, fire, or health approvals for the address.
Browse business licensing offices - Neighborhood services Open official service requests
Potholes, streetlights, graffiti, trash, and service requests
For a city-owned street or service inside Costa Mesa, 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
Orange 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 Costa Mesa.
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.
Costa Mesa does not replace the county for records, property taxes, courts, elections, benefits, public health, or county alerts. The official doors stay together below.
Orange County
Practical notes
Office, map, permit, and paperwork notes for Costa Mesa
Place answer · Rules and licenses · Reviewed July 5, 2026
Costa Mesa business plans should check both license and planning
Costa Mesa has online business license steps, but a real location also needs the right use, zoning fit, and planning question answered before opening.
Place answer · Home and property · Reviewed July 3, 2026
Costa Mesa projects usually start in TESSA
Costa Mesa uses TESSA for building permit applications, licensing, inspections, and project updates, so it is the first place to check before a local project.
Place answer · Outdoors · Reviewed June 30, 2026
Fairview Park mixes Costa Mesa trails with rare habitat care
Fairview Park is a 208-acre Costa Mesa park where public use, cultural resources, biological resources, vernal pools, and restoration planning all meet.
Countywide answer · Rules and licenses · Reviewed June 30, 2026
In Orange County, your supervisor district is part of the local map
Orange County divides cities and unincorporated areas into five supervisorial districts, so the district layer can help route county questions.
County practical note · Rules and licenses · Reviewed July 3, 2026
Anaheim Anytime is the front door for many city requests
Anaheim Anytime and Anaheim 311 help residents report many non-emergency city issues, including graffiti, abandoned items, streetlight outages, and other neighborhood service needs.
County practical note · Money and taxes · Reviewed July 3, 2026
Orange County property tax starts with value or payment
Orange County property tax errands usually split between the Assessor for assessed value and property records, and the Tax Collector for bills and payments.
Stories & Notes
Stories and local context in Orange County
Place story · History and culture
The OC Fairgrounds give Costa Mesa a year-round gathering place
OC Fair & Event Center started with Orange County's early fair tradition and now works as a 130-acre public gathering place with the fair, Centennial Farm, Heroes Hall, concerts, markets, and events.
Place story · History and culture
Costa Mesa's arts district grew out of lima bean fields
South Coast Plaza and the nearby arts district sit on a story that reaches back to the Segerstrom family's lima bean ranch.
Place story · History and culture
Estancia Park keeps Costa Mesa's old adobe layer in view
Estancia Park pairs a regular neighborhood park with the Diego Sepulveda Adobe, a restored 1820 structure tied to the area's old cattle-ranch layer.
Countywide story · Outdoors
Crystal Cove lets Orange County shift from beach to canyon
Crystal Cove has open seashore, tide pools, sandy coves, historic cottages, 3.2 miles of beach, and 2,400 acres of backcountry.
County place story · History and culture
Disneyland began as a very different Anaheim story
Before Disneyland opened in 1955, Anaheim still had open farmland and orange groves, making the city's later change feel even larger.
County place story · History and culture
Orange Plaza Park keeps Old Towne centered
Orange Plaza Park is the small green center of Old Towne, where the traffic circle, historic district, shops, events, and local memory all meet.
County place story · History and culture
Huntington Beach's surf story starts with a 1914 pier crowd
Huntington Beach built its surf identity over many decades, starting with early demonstrations near the pier and growing into a major surf competition town.
County place story · History and culture
Heritage Museum keeps a piece of old Santa Ana on a quiet campus
Heritage Museum of Orange County grew from the saved Kellogg family home and now gives Santa Ana a hands-on local history place.