Grand Isle County, VT Property Tax: $4,927/yr (2026)
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The effective property tax rate in Grand Isle County is 1.36% of assessed home value. On a home at the county median value of $363,500, that works out to about $4,944 per year, or $412 per month. Grand Isle County is located in northwestern Vermont, and is home to approximately 7,393 residents.
About Grand Isle County
Grand Isle County covers approximately 81.8 square miles in Vermont. The county is home to about 7,393 residents living in roughly 5,301 housing units, of which 52.8% are owner-occupied. The median household income is $90,625, and the median home was built in 1982.
Grand Isle County borders Clinton County, Chittenden County, Franklin County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Vermont
Property taxes in Vermont 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 Vermont 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 Grand Isle County Assessor's office to learn which exemptions apply to your property and when to file.
Grand Isle County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Grand Isle County, VT | 1.36% | $363,500 | $4,944 |
| Vermont state average | 1.72% | — | $6,252* |
| Clinton County | 1.98% | $175,100 | $3,461 |
| Chittenden County | 1.61% | $404,500 | $6,527 |
| Franklin County | 1.49% | $285,500 | $4,244 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Grand Isle County's median home value of $363,500. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Grand Isle County's property tax rate compare to the rest of Vermont?
At 1.36%, Grand Isle County is lower than the Vermont state average of 1.72%. On a home at the county median of $363,500, that means about $4,944 per year — versus $6,252 at the state average rate, a difference of $1,308 per year. Compared to the national average of 1.10%, Grand Isle County is above average.
What's a typical annual property tax bill in Grand Isle County?
For a home at the county median value of $363,500, the annual property tax in Grand Isle County is approximately $4,944 — or about $412 per month. For a home worth $545,250, expect around $7,415 per year. For a $727,000 home, approximately $9,887 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Grand Isle County property tax assessment?
Property assessment appeals in Grand Isle County are handled by the Grand Isle 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 Grand Isle County?
Vermont 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 1.36% shown here. Contact the Grand Isle 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