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County tax profile · 2026 · Census ACS + IRS data

Property Tax & Income in Mariposa County, California

Mariposa County has an effective property tax rate of 0.61%. On the median home value of $387,900, that's roughly $2,377 per year. Median household income is $68,412.

Effective Property Tax Rate1
0.61%
median tax $2,377 ÷ median home $387,900
Median Home Value1
$387,900
owner-occupied
Median Household Income1
$68,412
per-capita $41,417
Est. Annual Tax on Median Home1
$2,377
at 0.61% effective rate

What you'll pay, at a glance

Property taxes are the largest local tax most homeowners pay. The effective rate measures the real tax bill as a share of home value — a more useful number than the nominal “mill rate,” because assessment practices vary county to county.

MetricMariposa CountyCalifornia (state context)
Effective property tax rate10.61%0.70%
Median home value1$387,900—
State income tax3top rate 13.30%top rate 13.30%
State sales tax39.03% combined9.03% combined

How this is calculated

The effective property tax rate is the median real-estate tax bill divided by the median home value — both for owner-occupied homes, from the U.S. Census Bureau's American Community Survey (ACS 5-year estimates)1. Median income is also from the ACS1. Federal and state income-tax figures use IRS2 and Tax Foundation3 data.

About Mariposa County, CA

Mariposa County’s effective property tax rate of 0.613% falls below California’s statewide median of 0.698% and sits well under the national median of 0.794%. Among the state’s 58 counties, it ranks 56th, placing it near the bottom for property tax rates. That ranking signals a comparatively inexpensive tax environment for homeowners. A median home value of $387,900 produces a median annual real-estate tax bill of $2,377. With median household income at $68,412 and per-capita income at $41,417, property taxes here claim a smaller share of earnings than they would in higher-rate counties. Communities such as Catheys Valley, Coulterville, and El Portal reflect the county’s rural character. For buyers weighing tax costs alongside housing prices, Mariposa County offers one of California’s lowest effective rates.

Frequently asked questions

What is the property tax rate in Mariposa County, CA?
The effective rate is 0.61% — meaning the median tax bill equals about 0.61% of the median home value.
How much are property taxes on a median home?
On the median home ($387,900), the estimated annual bill is about $2,377.
Is Mariposa County's rate high or low?
Compare it to the state median of 0.70% and the national average near 1.1%.
How does the effective rate differ from my mill rate?
A mill rate is the nominal levy per $1,000 of assessed value. The effective rate reflects what you actually pay after exemptions and assessments — it's the median tax bill as a share of median home value, so it better predicts your real cost.
Will a reassessment raise my tax bill?
Not necessarily. If your home's assessed value rises, your bill can go up, but only if the mill rate and exemptions stay flat. Contact the Mariposa County assessor's office to review your current assessment.
Can I appeal my property tax assessment?
Yes. Most counties allow an appeal when you believe the assessed value exceeds the market value. File with the Mariposa County assessor within the local deadline, typically with comparable sales as evidence.
Sources
[1] U.S. Census Bureau — ACS 5-Year (2023) — Median home value (B25077), median real-estate taxes (B25103), median household income (B19013), per-capita income (B19301).
[2] IRS — Statistics of Income — County income, AGI, and real-estate taxes paid.
[3] Tax Foundation — State income, sales, corporate, and estate/inheritance tax rates.