Summit County, CO Property Tax: $2,641/yr (2026)
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The effective property tax rate in Summit County is 0.31% of assessed home value. On a home at the county median value of $850,700, that works out to about $2,637 per year, or $220 per month. Summit County is located in central Colorado, and is home to approximately 30,857 residents.
About Summit County
Summit County covers approximately 608.3 square miles in Colorado. The county is home to about 30,857 residents living in roughly 31,849 housing units, of which 26.8% are owner-occupied. The median household income is $106,255, and the median home was built in 1989.
Summit County borders Clear Creek County, Eagle County, Grand County, Lake County, Park County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Colorado
Property taxes in Colorado 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 Colorado 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 Summit County Assessor's office to learn which exemptions apply to your property and when to file.
Summit County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Summit County, CO | 0.31% | $850,700 | $2,637 |
| Colorado state average | 0.39% | — | $3,318* |
| Clear Creek County | 0.38% | $572,800 | $2,160 |
| Eagle County | 0.41% | $814,700 | $3,339 |
| Grand County | 0.35% | $507,200 | $1,763 |
| Lake County | 0.38% | $401,300 | $1,544 |
| Park County | 0.34% | $489,300 | $1,679 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Summit County's median home value of $850,700. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Summit County's property tax rate compare to the rest of Colorado?
At 0.31%, Summit County is lower than the Colorado state average of 0.39%. On a home at the county median of $850,700, that means about $2,637 per year — versus $3,318 at the state average rate, a difference of $681 per year. Compared to the national average of 1.10%, Summit County is below average.
What's a typical annual property tax bill in Summit County?
For a home at the county median value of $850,700, the annual property tax in Summit County is approximately $2,637 — or about $220 per month. For a home worth $1,276,050, expect around $3,956 per year. For a $1,701,400 home, approximately $5,274 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Summit County property tax assessment?
Property assessment appeals in Summit County are handled by the Summit 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 Summit County?
Colorado 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 0.31% shown here. Contact the Summit 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