Missoula County, MT Property Tax: $3,833/yr (2026)
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The effective property tax rate in Missoula County is 0.91% of assessed home value. On a home at the county median value of $423,100, that works out to about $3,850 per year, or $321 per month. Missoula County is located in western Montana, and is home to approximately 119,639 residents.
About Missoula County
Missoula County covers approximately 2,593.0 square miles in Montana. The county is home to about 119,639 residents living in roughly 56,008 housing units, of which 55.0% are owner-occupied. The median household income is $71,246, and the median home was built in 1984.
Missoula County borders Clearwater County, Idaho County, Flathead County, Granite County, Lake County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Montana
Property taxes in Montana are administered at the county level. Each county sets a millage rate applied to the assessed value of real property — the effective rate above accounts for any partial assessments and exemptions already built into the local tax base. Assessed value can differ meaningfully from current market value depending on how often the county reassesses and what fraction of market value it uses.
Most counties in Montana offer exemptions that reduce the taxable assessed value: homestead exemptions for primary residences, senior exemptions, disability exemptions, and veteran exemptions are common. These reduce your effective rate below the county-wide average shown here. Contact the Missoula County Assessor's office to learn which exemptions apply to your property and when to file.
Missoula County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Missoula County, MT | 0.91% | $423,100 | $3,850 |
| Montana state average | 0.77% | — | $3,258* |
| Clearwater County | 0.60% | $240,800 | $1,447 |
| Idaho County | 0.34% | $284,600 | $974 |
| Flathead County | 0.61% | $467,700 | $2,867 |
| Granite County | 0.61% | $339,500 | $2,061 |
| Lake County | 0.66% | $369,200 | $2,436 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Missoula County's median home value of $423,100. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Missoula County's property tax rate compare to the rest of Montana?
At 0.91%, Missoula County is higher than the Montana state average of 0.77%. On a home at the county median of $423,100, that means about $3,850 per year — versus $3,258 at the state average rate, a difference of $592 per year. Compared to the national average of 1.10%, Missoula County is below average.
What's a typical annual property tax bill in Missoula County?
For a home at the county median value of $423,100, the annual property tax in Missoula County is approximately $3,850 — or about $321 per month. For a home worth $634,650, expect around $5,775 per year. For a $846,200 home, approximately $7,700 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Missoula County property tax assessment?
Property assessment appeals in Missoula County are handled by the Missoula County Assessor's office. Most jurisdictions require filing within 30–90 days of receiving your assessment notice — confirm the specific deadline with the assessor's office before submitting, as deadlines and procedures vary by county. A successful appeal can reduce your assessed value and lower your tax bill for the current and future tax years.
What exemptions are available in Missoula County?
Montana counties commonly offer homestead exemptions for owner-occupied primary residences, senior citizen exemptions for qualifying homeowners aged 65 and older, exemptions for disabled residents, and veterans' exemptions. Each exemption reduces your assessed taxable value, which in turn reduces your effective tax rate below the county-wide 0.91% shown here. Contact the Missoula County Assessor's office to confirm which exemptions are available and the application deadlines.
Data sources: US Census Bureau ACS 2023 5-Year Estimates, US Census Gazetteer (2024), County Adjacency File