Granite County property tax
Homeowners in Granite County, Montana typically pay about 0.60% of their home's value in property tax each year — a median bill of $2,130 on a median home value of $352,700.
Typical effective rate
0.60%
higher than 72% of U.S. counties
Median tax paid
$2,130
per year
Median home value
$352,700
In MT
#35
of 56 ranked counties
At a glance
- Effective rate 0.60% — 36% lower than the U.S. median of 0.94%, and 16% lower than the Montana median of 0.72%.
- With vs. without a mortgage — median tax $2,172 for mortgaged homes, $2,096 for homes owned outright.
- State ranking — 35th highest effective rate of 56 ranked Montana counties; nationally it sits around the 28th percentile.
Estimate a bill for Granite County
Apply this county's typical effective rate (0.60%) to a home value of your choice.
Frequently asked questions
What is the property tax rate in Granite County, MT?
The typical effective property-tax rate in Granite County is 0.60% of a home's value per year, based on median taxes paid ($2,130) divided by the median home value ($352,700) in the Census ACS 2020–2024 5-year estimates. This is a typical burden for comparison, not a statutory mill rate.
How much is property tax on a typical home in Granite County?
The median owner-occupied home in Granite County is valued at $352,700, and the median real estate tax paid is $2,130 per year. Homes with a mortgage have a median tax of $2,172, versus $2,096 for homes without one.
How does Granite County compare to the rest of Montana?
Granite County's effective rate is 16% lower than the Montana median, ranking 35th of 56 ranked counties in the state.
Compare nearby Montana counties
Counties ranked closest to Granite County by in-state effective rate. Open the comparison tool or see all Montana counties.
| In-state | County | Effective rate | Median tax |
|---|---|---|---|
| 32 | Garfield County | 0.62% | $1,052 |
| 33 | Lake County | 0.61% | $2,561 |
| 34 | Wibaux County | 0.61% | $598 |
| 36 | Petroleum County | 0.60% | $1,211 |
| 37 | Treasure County | 0.59% | $1,364 |
| 38 | Gallatin County | 0.59% | $3,933 |
Official data & resources for Granite County
- Granite County Census profile (data.census.gov) — housing, value and tax figures for this county.
- Table B25103 for Granite County — median real estate taxes paid (the source for the tax figures above).
- Table B25077 for Granite County — median home value.
- Federal forms & is property tax deductible? — IRS Pub 530, Schedule A and the SALT cap, plus your state tax agency.
Finding your exact bill
Your county or municipal assessor (sometimes called the appraisal district, property appraiser, or tax collector) sets the assessed value and the exact millage that produces your bill. Search for "[county name] [state] assessor" or "property tax" on an official .gov site.
Figures on this page are Census survey medians for the whole county (2020–2024 5-year), not an assessment of any individual property. Rates, exemptions and assessment practices vary by municipality and school district within a county.