Petrolia, Humboldt County, California Property Taxes
Property Taxes in Petrolia, California
Median Petrolia, California effective property tax rate: 1.02%, lower than the national median of 1.02%, and lower than the California state median of 1.21%.
Median Petrolia, California home value: $180,309
Median annual Petrolia, California tax bill: $1,773, lower than the national median property tax bill of $2,400.
How are property taxes in Humboldt calculated?
Property taxes in Petrolia, California are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding Petrolia's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Petrolia, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Petrolia, Humboldt County, California Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.02%
Estimate Property Tax Bill
$1,839
$1,707
How Does the Petrolia Property Tax Calculator Work?
Use this Petrolia property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Petrolia's median effective tax rate of 1.02% — based on actual property records in Humboldt County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessment system uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Petrolia's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Petrolia's median effective property tax rate is lower than Humboldt County's and higher than California's 1.21% state median tax rate. The median property tax bill in Petrolia is $1,773, which is $627 lower than the state median property tax bill of $2,400.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Petrolia.
About Petrolia Property Taxes
About Property Taxes in Petrolia, Humboldt, California
Petrolia’s median effective property tax rate of 1.02% is lower than the California state median of 1.21% and lower than the national median of 1.02%. This rate reflects the Humboldt County base levy combined with local school district levies and Mello-Roos Community Facility Districts that vary by subdivision throughout the city.
Property tax rates are not uniform across Petrolia. Homeowners in the 95558 ZIP code carry a median effective rate of 1.02%, while those in the same ZIP code also pay 1.02%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Humboldt County. Understanding which part of Petrolia you live in can make a meaningful difference to your annual tax bill.
Petrolia homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the November 30, 2026 deadline each year.
If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.
Property Tax Rates Across Petrolia, Humboldt County, California
As noted earlier, local government entities set tax rates, which can vary widely within a state.
Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.
While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.
Below, you can compare Petrolia's effective property tax rate to other cities in California and the median property tax rates in California and the U.S.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Petrolia Tax Rate
1.02%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Humboldt County Tax Rate
1.08%
Median Effective California Tax Rate
1.21%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Petrolia, Humboldt County, California
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 95558 | 0.97% | 1.00% | 1.02% | 1.02% | 1.02% |
Source: Ownwell
Property Tax Assessment Values Across Petrolia, Humboldt County, California
When examining property taxes in Petrolia, California, understanding the distinction between market value and assessed value is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Humboldt County appraisal district estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices:
In Humboldt County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month when notices are sent.
Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Petrolia.
For example, the median home price in Petrolia is $180,309, with tax bills ranging significantly across the county. Zip code 95558 has the highest median home price at $180,309.
Property Tax Assessment Values Across Petrolia, Humboldt County, California
Source: Ownwell
$43,347
$206,578
$369,809
Median Petrolia Market Value
$180,309
Median Humboldt County Market Value
$238,477
Median California Market Value
$427,605
Median United States Market Value
$235,294
Property Tax Assessment Values Across Petrolia, Humboldt County, California
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 95558 | $44,307 | $82,625 | $180,309 | $306,888 | $431,190 |
Source: Ownwell
Property Tax Bills Across Petrolia, Humboldt County, California
Property tax bills in Petrolia are based on the assessed value of a home, not its market price alone. Local tax rates are applied to that assessed value, and the final bill reflects the property’s location, any voter-approved levies, and other local charges that may apply. For homeowners, this means two similar homes can receive different tax bills if their assessed values or tax rates differ.
In Petrolia, the median home price is $180,309, and the median property tax bill is $1,773, which is below the national median property tax bill of $2,400. Bills can vary widely, with the 25th percentile at $847 and the 75th percentile at $3,126. At the high end, the 90th percentile reaches $4,348. These differences show how property tax bills can change based on the home’s assessed value and local tax conditions, affecting monthly housing costs and long-term affordability for homeowners.
Median Petrolia Tax Bill
$1,773
Median Humboldt County Tax Bill
$2,611
Median California Tax Bill
$5,134
Median United States Tax Bill
$2,400
Property Tax Bills Across Petrolia, Humboldt County, California
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 95558 | $443 | $847 | $1,773 | $3,126 | $4,348 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | November 30 |
Links | |
|---|---|
| Humboldt Tax Assessor | |
| Website | common1.mptsweb.com |