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County · California

Sonoma County

Sonoma County is a county in California. It pays for health and human services, police, public works and parks. In fiscal year 2024, Sonoma County collected $476.7M in taxes and spent $1,363.7M.

Collected and spent

In fiscal year 2024, Sonoma County collected $476.7M in taxes and spent $1,363.7M.

Collected
$476.7M
Fiscal year 2024 · taxes
Spent
$1,363.7M
Fiscal year 2024

Where the money comes from

One tax.

Property tax, the 1% base
$1 per $100 of value
the home's full cash value as Proposition 13 sets it: the price paid, rising at most 2% a year · Set by the California Constitution (Proposition 13); the county collects it and shares it with the cities, schools and districts by a state formula
Source · California Legislative Information, Prop 13. Read on October 15, 2026.
DetailsProp 13 (CA Const. Art. XIII A §1)

Where it goes

Seven service lines.

Health and human services
$537.4M
Police
$411.1M
Public works
$198.0M
General government
$147.2M
Parks and recreation
$40.0M
Debt service · past obligation
$28.7M
Schools
$1.2M

Bars in both tables share one scale. Hatched lines pay for past obligations, not current services.

Source · County of Sonoma, California — Annual Comprehensive Financial Report for the Fiscal Year Ended June 30, 2024. Read on June 22, 2026.
DetailsCounty of Sonoma, California — Annual Comprehensive Financial Report for the Fiscal Year Ended June 30, 2024; Statement of Revenues, Expenditures and Changes in Fund Balances — Governmental Funds; Total column; fiscal year end June 30, 2024; amounts in thousands

Who decides

The 5 supervisors run the county. They pass the budget each year. They also set the county tax rates.

Rebecca Hermosillo
Supervisor, District 1
Term end not published
Re-check by November 3, 2026
David Rabbitt
Supervisor, District 2
Term end not published
Re-check by November 3, 2026
Chris Coursey
Supervisor, District 3
Term end not published
Re-check by November 3, 2026
James Gore
Supervisor, District 4
Term end not published
Re-check by November 3, 2026
Lynda Hopkins
Supervisor, District 5
Term end not published
Re-check by November 3, 2026
Source · California Legislative Information, Cal. Rev. & Tax. Code §2151. Read on October 10, 2026.
DetailsCal. Rev. & Tax. Code §2151 (tax rates); Gov. Code §29088 (budget adoption) (read 2026-10-10)

When decisions happen

The board must pass the final budget by October 2. By June 30, it okays a draft budget so it can spend.

Each yearThe county budget year runs July 1 to June 30.
Next electionThe next general election is November 3, 2026.
Supervisors are elected at the June primary in even years.

How to reach it

Board of Supervisors: 707-565-2241
Phone
bos@sonomacounty.gov
Email
575 Administration Drive, Room 100 A, Santa Rosa, CA 95403
Mailing address
Source · California Legislative Information, Cal. Gov. Code §29001(e). Read on October 10, 2026.
DetailsCal. Gov. Code §29001(e) (fiscal year July 1 through June 30); §29088 (adopt by October 2); §29064 (June 30 recommended budget) (read 2026-10-10)

Also on this tax bill

A Sonoma County address pays these governments too. Which school districts and cities apply depends on the address.

On every bill in Sonoma County

On some bills, depending on the address

School districts: 37. Find yours by address.

Cities: 5

Santa RosaCity
Sea RanchNot in Who Taxes Me yet
PetalumaNot in Who Taxes Me yet
Bodega BayNot in Who Taxes Me yet
GuernevilleNot in Who Taxes Me yet

Sources

Collected
County of Sonoma, California — Annual Comprehensive Financial Report for the Fiscal Year Ended June 30, 2024. Read on June 22, 2026.
DetailsCounty of Sonoma, California — Annual Comprehensive Financial Report for the Fiscal Year Ended June 30, 2024; Statement of Revenues, Expenditures and Changes in Fund Balances — Governmental Funds; Total column; fiscal year end June 30, 2024; amounts in thousands
Spent
County of Sonoma, California — Annual Comprehensive Financial Report for the Fiscal Year Ended June 30, 2024. Read on June 22, 2026.
DetailsCounty of Sonoma, California — Annual Comprehensive Financial Report for the Fiscal Year Ended June 30, 2024; Statement of Revenues, Expenditures and Changes in Fund Balances — Governmental Funds; Total column; fiscal year end June 30, 2024; amounts in thousands
Taxes
California Legislative Information, Prop 13. Read on October 15, 2026.
DetailsProp 13 (CA Const. Art. XIII A §1)
Who decides
California Legislative Information, Cal. Rev. & Tax. Code §2151. Read on October 10, 2026.
DetailsCal. Rev. & Tax. Code §2151 (tax rates); Gov. Code §29088 (budget adoption) (read 2026-10-10)
When decisions happen
California Legislative Information, Cal. Gov. Code §29001(e). Read on October 10, 2026.
DetailsCal. Gov. Code §29001(e) (fiscal year July 1 through June 30); §29088 (adopt by October 2); §29064 (June 30 recommended budget) (read 2026-10-10)
How to reach it
Sonoma County, Sonoma County Board of Supervisors page. Read on October 10, 2026.
DetailsSonoma County Board of Supervisors page (Contact us) (read 2026-10-10)
What it does
County of Sonoma, California — Annual Comprehensive Financial Report for the Fiscal Year Ended June 30, 2024. Read on June 22, 2026.
DetailsCounty of Sonoma, California — Annual Comprehensive Financial Report for the Fiscal Year Ended June 30, 2024; Statement of Revenues, Expenditures and Changes in Fund Balances — Governmental Funds; Total column; fiscal year end June 30, 2024; amounts in thousands

To act on what you have read

Who Taxes Me describes. These three tools, made by the same team, are where you can do something about it. Each opens in a new tab.