Jo Daviess County, IL Property Tax: $3,383/yr (2026)
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The effective property tax rate in Jo Daviess County is 1.74% of assessed home value. On a home at the county median value of $193,900, that works out to about $3,374 per year, or $281 per month. Jo Daviess County is located in northwestern Illinois, and is home to approximately 21,918 residents.
About Jo Daviess County
Jo Daviess County covers approximately 600.9 square miles in Illinois. The county is home to about 21,918 residents living in roughly 13,425 housing units, of which 63.3% are owner-occupied. The median household income is $74,954, and the median home was built in 1976.
Jo Daviess County borders Carroll County, Stephenson County, Dubuque County, Jackson County, Grant County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Illinois
Property taxes in Illinois 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 Illinois 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 Jo Daviess County Assessor's office to learn which exemptions apply to your property and when to file.
Jo Daviess County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Jo Daviess County, IL | 1.74% | $193,900 | $3,374 |
| Illinois state average | 1.83% | — | $3,548* |
| Carroll County | 2.03% | $113,500 | $2,308 |
| Stephenson County | 2.46% | $127,500 | $3,140 |
| Dubuque County | 1.26% | $226,100 | $2,848 |
| Jackson County | 1.25% | $170,000 | $2,129 |
| Grant County | 1.44% | $186,300 | $2,683 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Jo Daviess County's median home value of $193,900. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Jo Daviess County's property tax rate compare to the rest of Illinois?
At 1.74%, Jo Daviess County is lower than the Illinois state average of 1.83%. On a home at the county median of $193,900, that means about $3,374 per year — versus $3,548 at the state average rate, a difference of $174 per year. Compared to the national average of 1.10%, Jo Daviess County is above average.
What's a typical annual property tax bill in Jo Daviess County?
For a home at the county median value of $193,900, the annual property tax in Jo Daviess County is approximately $3,374 — or about $281 per month. For a home worth $290,850, expect around $5,061 per year. For a $387,800 home, approximately $6,748 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Jo Daviess County property tax assessment?
Property assessment appeals in Jo Daviess County are handled by the Jo Daviess 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 Jo Daviess County?
Illinois 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 1.74% shown here. Contact the Jo Daviess 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