Mariposa County Property Tax Rates by City, Area, and Tax District 2026
Property taxes in Mariposa County vary by parcel, assessed value, and the local tax districts serving each property. A useful countywide benchmark is an effective property tax rate of about 0.53%, with a median annual property tax of approximately $1,482.
Effective Tax Rate
0.58%
Median Property Tax
$2,377
Tax per $100K
$580
Last Update
August 2026
Mariposa County Property Tax 2026-27
Mariposa County Property Tax Rate
Mariposa County property tax rates vary by district in the provided data. Parcel bills can still include fixed charges, parcel taxes, CFD charges, or special assessments depending on the property.
Base rate
1.0000% general ad valorem tax.
District rates
Mariposa County district rates vary from 1.0000% to 1.4835% in the provided data.
Direct charges
Special assessments and parcel charges are added separately.
Area
Representative Rate
Countywide Base District
1.0000%
Bass Lake Joint Union Overlap
1.0260%
Catheys Valley District
1.0345%
Coulterville District
1.0345%
El Portal District
1.0200%
Hornitos District
1.0345%
Lake Don Pedro Community Service Zone
1.0345%
Mariposa (Town/Unincorporated Center)
1.0345%
State Unitary Utility Allocation
1.0345%
Yosemite Joint Community College Zone
1.0214%
Other Mariposa County Property Tools
Property tax research is easier when you can review the parcel itself alongside tax-rate information. These tools can help buyers, owners, investors, and researchers examine property details, estimate taxes, and understand location-related information.
Mariposa County Property Search
Search property records using an owner name, address, parcel number, city, ZIP code, or other available property filters.
Mariposa Property Tax Calculator
Estimate potential property taxes by entering a property value and using relevant tax-rate information for the property.
Mariposa Doc Stamp Calculator
Estimate applicable documentary transfer tax or related document charges associated with qualifying real estate transactions.
Mariposa County Zoning and Maps
Explore parcel locations, zoning information, maps, boundaries, and other geographic details connected with a property.
How Property Tax Rates Are Applied in Mariposa County
The tax calculation starts with the property’s assessed value and the tax rate assigned to its location. In California, the basic property tax is generally based on 1% of assessed value, while voter-approved debt, special assessments, and other charges can increase the final amount shown on the bill.
Assessed Value and Taxable Value
The Mariposa County Assessor determines assessed values for taxable real property. For many properties subject to California’s Proposition 13 framework, the assessed value is tied to the purchase or other qualifying reassessment event and generally cannot increase by more than 2% annually unless another reassessment occurs.
Applying the Applicable Tax Rate
Once the taxable assessed value is established, the applicable tax rate is applied to determine the property tax portion of the bill. The exact rate depends on the property’s Tax Rate Area and the charges associated with that location.
Tax Rate Areas
A Tax Rate Area identifies the combination of taxing agencies and approved charges that apply to a particular parcel. Two properties within the same county can have different TRAs, so their total property tax rates may not be identical.
Special Assessments and Direct Charges
Some charges appear separately from the basic property tax calculation. Mariposa County notes that special assessments can support services such as water, sewer, roads and maintenance, or lighting, depending on the property and the agency providing the service.
Voter-Approved Bonds and Taxes
Voters may approve bonds or other property-related taxes that apply within defined areas. When applicable, these charges become part of the total amount a property owner owes and can make the final tax rate higher than the basic 1% rate.
Annual and Supplemental Bills
Regular secured property taxes are generally billed in two installments. A change in ownership or completed new construction can also produce a supplemental assessment, creating an additional bill based on the change in assessed value and the remaining portion of the fiscal year.
Why Mariposa County Has Different Tax Districts and Local Rates
The county includes a large rural and mountainous area, with properties served by different combinations of public agencies and special districts. Because each parcel falls within a particular Tax Rate Area, the total property tax burden can change from one location to another.
- Different districts exist to fund services provided to specific properties or geographic areas within the county.
- Local services and public facilities can create charges that apply only to properties inside particular taxing jurisdictions.
- Each Tax Rate Area combines the applicable countywide taxes with qualifying district and voter-approved charges.
- Two nearby parcels can fall into different taxing areas, resulting in different total property tax amounts.
- Approved bonds and special taxes may add charges to properties located within the relevant service or assessment area.
- A parcel’s precise location determines which agencies, districts, exemptions, and direct charges appear on its tax bill.
Check Property Tax Rates in Nearby California Counties
Comparing nearby counties can give buyers, property owners, and investors useful context when evaluating taxes across the central Sierra Nevada and adjacent Central Valley. California Property Checker provides county-specific property information for broader property research and comparison.
Frequently Asked Questions
Does buying a property change its assessed value?
A qualifying change in ownership can trigger reassessment under California law. The Assessor generally establishes a new assessed value based on the property’s current market value at the time of the change, subject to applicable exemptions and exclusions.
Why might I receive a supplemental property tax bill after buying a home?
A purchase can create a supplemental assessment when the newly assessed value differs from the previous assessed value. The resulting supplemental tax reflects the change and is generally prorated for the applicable portion of the fiscal year.
Can new construction increase my property taxes?
Yes. Completed new construction can trigger a supplemental assessment for the added value. Improvements such as qualifying additions may therefore affect future property taxes as well as potentially generate a supplemental bill.
How can I check whether my property received an exemption?
Property owners can review their assessment information and contact the Mariposa County Assessor regarding exemption eligibility. The homeowners’ exemption may apply to an eligible principal residence, but a claim generally must be filed by the property owner.
What happens if I disagree with my assessed value?
Property owners who believe an assessment is incorrect may have the right to seek an assessment review or file an appeal through the applicable county process. Supporting evidence about the property’s value can be important when disputing an assessment.
When are regular property tax installments due?
For secured property, the first installment is due November 1 and becomes delinquent after December 10 if unpaid. The second installment is due February 1 and becomes delinquent after April 10, subject to applicable weekend and holiday rules.
What happens if property taxes become delinquent?
Late secured-property-tax payments can result in statutory penalties and additional costs. Continued delinquency can lead to further collection action, so owners should review the bill and contact the Tax Collector promptly if a payment problem occurs.
Can my property tax bill be higher than the basic 1% rate?
Yes. California’s basic property tax rate is generally 1% of assessed value, but the final bill can include voter-approved bonded indebtedness, special assessments, direct charges, and other applicable amounts tied to the property’s location.
Does the sale price always equal my long-term taxable value?
Not necessarily. A qualifying purchase can establish a new assessed value, but California’s property-tax system generally limits annual increases in assessed value under Proposition 13. Future reassessment events can change the taxable value.
Where can I verify the actual tax amount for a property?
The actual amount owed should be verified through the official property tax records and bill for the specific parcel. California Property Checker can assist with property research, but it is a private information platform and is not a government agency.