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Buying a home in Granite County, Montana

The typical owner-occupied home in Granite County is worth about $352,700, 6% below the Montana median of $375,800 and 6% above the national median of $332,700. Owners pay a median $2,130 a year in property taxes, about 0.60% of their home's value, lower than the Montana rate of 0.72%. The median household earns $59,265 a year, so the median home costs 6.0 times the median income (5.2 times for Montana). 78% of occupied homes here are lived in by their owners, and 34% of those owners still have a mortgage.

Granite County at a glance

Granite County Montana U.S.
Median home value $352,700 $375,800 $332,700
Median property tax paid per year $2,130 $2,693 $3,119
Property tax as a share of value 0.60% 0.72% 0.94%
Median household income $59,265 $72,509 $80,734
Homes lived in by their owners 78% 69% 65%
Owner homes with a mortgage 34% 55% 61%
Median monthly costs, owners with a mortgage $1,708 $1,798 $1,963
Those costs as a share of the owners' income 22.8% 21.9% 21.0%
Median rent $675 $1,081 $1,413
Rent as a share of renters' income 27.9% 27.8% 30.6%
Median year homes were built 1980 1981 1980
Vacant homes 41.8% 13.2% 10.1%
Population 3,462 1,116,875 334,922,499

What a typical home costs per month in Granite County

At this week's average 30-year rate of 7.11%, buying the median Granite County home of $352,700 with 20% down costs about $2,221 a month, including property taxes and insurance. With an FHA loan and 3.5% down, it's about $2,809, because the loan is bigger and FHA adds mortgage insurance.

Lenders usually want housing costs under about 28% of gross income, which means an income of roughly $95,204 for the 20%-down payment. That payment is 45% of the median Granite County household income of $59,265; at that income and 20% down, the 28% guideline points to a home of about $220,000.

The median rent here is $675 a month, so owning the median home costs about $1,546 a month more than renting, before you count the equity you build and any tax benefits.

20% down, 30-year conventional loan
Down payment$70,540
Loan amount$282,160
Principal and interest$1,898
Property taxes (0.60% a year)$176
Homeowners insurance (our estimate, 0.5% a year)$147
PMI$0
Total per month$2,221

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3.5% down, 30-year FHA loan
Down payment$12,344
Loan amount$346,312
Principal and interest$2,330
Property taxes (0.60% a year)$176
Homeowners insurance (our estimate, 0.5% a year)$147
FHA mortgage insurance$156
Total per month$2,809

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Questions about home buying in Granite County

What is the median home value in Granite County?

About $352,700 for owner-occupied homes, according to the Census Bureau's 2020–2024 American Community Survey.

How much are property taxes in Granite County?

Homeowners pay a median $2,130 a year, which is about 0.60% of the median home value. Your bill depends on your home's assessed value and local rates.

What income do you need to buy a home in Granite County?

For the median home with 20% down at 7.11%, the payment is about $2,221 a month. Keeping that under 28% of gross income takes about $95,204 a year.

More about Granite County

Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates; Freddie Mac Primary Mortgage Market Survey, week of November 12, 2026. Estimates for small places have wide margins of error. About our data