Rock County, MN Property Tax: $1,451/yr (2026)
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The effective property tax rate in Rock County is 0.72% of assessed home value. On a home at the county median value of $201,600, that works out to about $1,452 per year, or $121 per month. Rock County is located in southwestern Minnesota, and is home to approximately 9,628 residents.
About Rock County
Rock County covers approximately 482.5 square miles in Minnesota. The county is home to about 9,628 residents living in roughly 4,236 housing units, of which 70.9% are owner-occupied. The median household income is $70,698, and the median home was built in 1958.
Rock County borders Lyon County, Murray County, Nobles County, Pipestone County, Minnehaha County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Minnesota
Property taxes in Minnesota 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 Minnesota 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 Rock County Assessor's office to learn which exemptions apply to your property and when to file.
Rock County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Rock County, MN | 0.72% | $201,600 | $1,452 |
| Minnesota state average | 0.97% | — | $1,956* |
| Lyon County | 0.92% | $215,600 | $1,983 |
| Murray County | 0.77% | $179,400 | $1,373 |
| Nobles County | 0.93% | $179,200 | $1,674 |
| Pipestone County | 0.91% | $126,700 | $1,154 |
| Minnehaha County | 1.16% | $266,600 | $3,090 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Rock County's median home value of $201,600. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Rock County's property tax rate compare to the rest of Minnesota?
At 0.72%, Rock County is lower than the Minnesota state average of 0.97%. On a home at the county median of $201,600, that means about $1,452 per year — versus $1,956 at the state average rate, a difference of $504 per year. Compared to the national average of 1.10%, Rock County is below average.
What's a typical annual property tax bill in Rock County?
For a home at the county median value of $201,600, the annual property tax in Rock County is approximately $1,452 — or about $121 per month. For a home worth $302,400, expect around $2,177 per year. For a $403,200 home, approximately $2,903 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Rock County property tax assessment?
Property assessment appeals in Rock County are handled by the Rock 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 Rock County?
Minnesota 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 0.72% shown here. Contact the Rock 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