Rio Blanco County, CO Property Tax: $837/yr (2026)
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The effective property tax rate in Rio Blanco County is 0.34% of assessed home value. On a home at the county median value of $243,400, that works out to about $828 per year, or $69 per month. Rio Blanco County is located in northwestern Colorado, and is home to approximately 6,518 residents.
About Rio Blanco County
Rio Blanco County covers approximately 3,221.0 square miles in Colorado. The county is home to about 6,518 residents living in roughly 3,288 housing units, of which 59.7% are owner-occupied. The median household income is $72,620, and the median home was built in 1980.
Rio Blanco County borders Garfield County, Moffat County, Routt County, Uintah 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 Rio Blanco County Assessor's office to learn which exemptions apply to your property and when to file.
Rio Blanco County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Rio Blanco County, CO | 0.34% | $243,400 | $828 |
| Colorado state average | 0.39% | — | $949* |
| Garfield County | 0.43% | $490,600 | $2,095 |
| Moffat County | 0.43% | $262,500 | $1,129 |
| Routt County | 0.33% | $756,200 | $2,490 |
| Uintah County | 0.54% | $270,200 | $1,447 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Rio Blanco County's median home value of $243,400. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Rio Blanco County's property tax rate compare to the rest of Colorado?
At 0.34%, Rio Blanco County is lower than the Colorado state average of 0.39%. On a home at the county median of $243,400, that means about $828 per year — versus $949 at the state average rate, a difference of $121 per year. Compared to the national average of 1.10%, Rio Blanco County is below average.
What's a typical annual property tax bill in Rio Blanco County?
For a home at the county median value of $243,400, the annual property tax in Rio Blanco County is approximately $828 — or about $69 per month. For a home worth $365,100, expect around $1,241 per year. For a $486,800 home, approximately $1,655 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Rio Blanco County property tax assessment?
Property assessment appeals in Rio Blanco County are handled by the Rio Blanco 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 Rio Blanco 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 0.34% shown here. Contact the Rio Blanco 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