Property taxes in Illinois
At $5,406, the median annual property tax bill in Illinois is 51% above the national figure of $3,580, ranking 6 of 52, with Lake County the highest county at $8,609.
Two houses with the same price can carry very different tax bills. That gap is decided county by county.
| Rank | County | Typical figure | Context |
|---|---|---|---|
| 1 | Lake County | $8,609 | 2.74% of value |
| 2 | DuPage County | $7,646 | 2.11% of value |
| 3 | Kendall County | $7,460 | 2.59% of value |
| 4 | Kane County | $7,155 | 2.47% of value |
| 5 | McHenry County | $7,068 | 2.61% of value |
| 6 | Will County | $6,825 | 2.41% of value |
| 7 | Cook County | $5,941 | 2.02% of value |
| 8 | DeKalb County | $5,732 | 2.62% of value |
| 9 | Grundy County | $4,953 | 2.02% of value |
| 10 | Monroe County | $4,494 | 1.77% of value |
| 11 | McLean County | $4,411 | 2.31% of value |
| 12 | Boone County | $4,245 | 2.34% of value |
| 13 | Champaign County | $4,149 | 2.15% of value |
| 14 | Woodford County | $4,127 | 2.22% of value |
| 15 | Kankakee County | $4,055 | 2.29% of value |
| 16 | Winnebago County | $3,812 | 2.60% of value |
| 17 | Ogle County | $3,593 | 2.08% of value |
| 18 | Peoria County | $3,487 | 2.32% of value |
| 19 | St. Clair County | $3,444 | 2.17% of value |
| 20 | Tazewell County | $3,431 | 2.16% of value |
| 21 | Jo Daviess County | $3,370 | 1.88% of value |
| 22 | Clinton County | $3,360 | 1.96% of value |
| 23 | Rock Island County | $3,308 | 2.37% of value |
| 24 | LaSalle County | $3,260 | 2.21% of value |
| 25 | Sangamon County | $3,258 | 2.01% of value |
| 26 | Madison County | $3,117 | 1.96% of value |
| 27 | Stephenson County | $3,047 | 2.50% of value |
| 28 | Piatt County | $3,025 | 1.80% of value |
| 29 | Menard County | $2,957 | 1.67% of value |
| 30 | Lee County | $2,872 | 1.95% of value |
| 31 | Henry County | $2,838 | 2.04% of value |
| 32 | Washington County | $2,804 | 1.91% of value |
| 33 | Livingston County | $2,787 | 2.18% of value |
| 34 | Jersey County | $2,748 | 1.70% of value |
| 35 | Effingham County | $2,673 | 1.61% of value |
| 36 | Putnam County | $2,625 | 1.63% of value |
| 37 | Whiteside County | $2,612 | 2.14% of value |
| 38 | Bond County | $2,611 | 2.00% of value |
| 39 | Mercer County | $2,579 | 1.97% of value |
| 40 | Marshall County | $2,576 | 2.07% of value |
Put the real tax number in your mortgage maths
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Methodology
Every figure on this page comes from the U.S. Census Bureau's American Community Survey 5-year estimates. We store one row per county and roll counties up to state level, weighting each county by its population so that large metros are not treated the same as very small counties.
The median real-estate tax bill shown for a state is that population-weighted figure, not a simple average of county values. National comparisons use the same method across all states, so the state-versus-U.S. gap you see is a like-for-like comparison.
These are survey estimates, not transaction records, and they describe typical households rather than any individual situation. Nothing here is personalised financial advice.
The effective rate we show is our own calculation: median real-estate taxes paid divided by median home value in the same place. It is a comparison tool, not a millage rate, and it does not account for exemptions, caps or assessment lags.
Sources: U.S. Census Bureau, American Community Survey (5-year). American Community Survey 5-year estimates, 2022.
Source: U.S. Census Bureau, American Community Survey (5-year).