Property Tax in Illinois by County
Homeowners in Illinois pay a median of $5,189 a year in real estate taxes on a median home value of $250,500, according to the US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023. The table below covers all 102 counties in the state for which the Census Bureau publishes figures. That state median is about 75% higher than the US median of $2,969.
At the top of the Illinois table sits Lake County, IL (median $8,743); at the bottom, Pulaski County, IL (median $668). One state, one tax system on paper — but the bills are set locally, county by county and district by district.
How do the counties compare with the nation? 29 of the 102 counties listed here sit above the US median bill of $2,969. Take the county medians themselves and the middle one is $2,385; the full range runs from $668 (Pulaski County) up to $8,743 (Lake County).
Two reference points for the state's geography: Cook County is Illinois's most populous county with 5,185,812 residents, while McLean County is the largest by land area at 1,183 square miles. Both appear in the table with their own median figures.
Where people live in Illinois: Cook County leads with 5,185,812 residents (median tax $6,053, median home $305,200), followed by DuPage County (927,263; $7,833 on $374,100) and Lake County (711,885; $8,743 on $326,600).
Illinois counties: median property tax
| County | Median tax paid | Median home value | Derived rate* | Population |
|---|---|---|---|---|
| Lake County, IL | $8,743 | $326,600 | 2.68% | 711,885 |
| DuPage County, IL | $7,833 | $374,100 | 2.09% | 927,263 |
| Kendall County, IL | $7,556 | $298,900 | 2.53% | 135,053 |
| Kane County, IL | $7,230 | $303,000 | 2.39% | 516,097 |
| McHenry County, IL | $7,153 | $286,900 | 2.49% | 311,366 |
| Will County, IL | $6,993 | $298,000 | 2.35% | 698,450 |
| Cook County, IL | $6,053 | $305,200 | 1.98% | 5,185,812 |
| DeKalb County, IL | $5,889 | $231,900 | 2.54% | 100,512 |
| Grundy County, IL | $5,260 | $259,200 | 2.03% | 52,920 |
| Monroe County, IL | $4,523 | $265,600 | 1.70% | 34,969 |
| Boone County, IL | $4,507 | $198,600 | 2.27% | 53,316 |
| McLean County, IL | $4,503 | $198,300 | 2.27% | 170,882 |
| Champaign County, IL | $4,245 | $205,100 | 2.07% | 206,098 |
| Woodford County, IL | $4,224 | $193,800 | 2.18% | 38,348 |
| Kankakee County, IL | $4,125 | $185,700 | 2.22% | 106,833 |
| Winnebago County, IL | $3,850 | $155,100 | 2.48% | 283,289 |
| Ogle County, IL | $3,737 | $184,100 | 2.03% | 51,536 |
| St. Clair County, IL | $3,533 | $168,800 | 2.09% | 254,777 |
| Tazewell County, IL | $3,481 | $164,500 | 2.12% | 130,555 |
| Peoria County, IL | $3,416 | $152,600 | 2.24% | 179,831 |
| Jo Daviess County, IL | $3,383 | $193,900 | 1.75% | 21,918 |
| Rock Island County, IL | $3,372 | $144,700 | 2.33% | 142,995 |
| Sangamon County, IL | $3,369 | $170,300 | 1.98% | 195,217 |
| Clinton County, IL | $3,356 | $180,500 | 1.86% | 36,899 |
| LaSalle County, IL | $3,336 | $154,900 | 2.15% | 109,049 |
| Madison County, IL | $3,232 | $167,900 | 1.93% | 264,631 |
| Stephenson County, IL | $3,140 | $127,500 | 2.46% | 44,042 |
| Piatt County, IL | $3,040 | $173,200 | 1.75% | 16,702 |
| Lee County, IL | $2,980 | $155,100 | 1.92% | 34,058 |
| Jersey County, IL | $2,957 | $168,800 | 1.75% | 21,336 |
| Menard County, IL | $2,936 | $179,300 | 1.64% | 12,169 |
| Henry County, IL | $2,877 | $145,300 | 1.98% | 48,948 |
| Livingston County, IL | $2,867 | $131,500 | 2.18% | 35,659 |
| Washington County, IL | $2,766 | $149,800 | 1.85% | 13,682 |
| Marshall County, IL | $2,743 | $137,800 | 1.99% | 11,715 |
| Effingham County, IL | $2,713 | $179,800 | 1.51% | 34,505 |
| Mercer County, IL | $2,710 | $139,300 | 1.95% | 15,619 |
| Whiteside County, IL | $2,676 | $125,800 | 2.13% | 55,192 |
| Putnam County, IL | $2,668 | $167,800 | 1.59% | 5,600 |
| Bond County, IL | $2,612 | $133,100 | 1.96% | 16,627 |
| Douglas County, IL | $2,586 | $142,600 | 1.81% | 19,686 |
| Calhoun County, IL | $2,565 | $174,000 | 1.47% | 4,406 |
| Macon County, IL | $2,560 | $121,800 | 2.10% | 102,591 |
| Bureau County, IL | $2,522 | $121,900 | 2.07% | 33,027 |
| Coles County, IL | $2,494 | $121,900 | 2.05% | 46,689 |
| Williamson County, IL | $2,490 | $145,600 | 1.71% | 66,902 |
| Adams County, IL | $2,461 | $155,900 | 1.58% | 65,166 |
| Iroquois County, IL | $2,449 | $125,400 | 1.95% | 26,746 |
| Ford County, IL | $2,443 | $118,100 | 2.07% | 13,396 |
| Morgan County, IL | $2,420 | $128,700 | 1.88% | 32,621 |
| Jackson County, IL | $2,385 | $125,000 | 1.91% | 52,706 |
| Jasper County, IL | $2,341 | $122,900 | 1.91% | 9,233 |
| Moultrie County, IL | $2,316 | $121,500 | 1.91% | 14,469 |
| Logan County, IL | $2,315 | $125,900 | 1.84% | 27,870 |
| Carroll County, IL | $2,308 | $113,500 | 2.03% | 15,621 |
| De Witt County, IL | $2,297 | $124,200 | 1.85% | 15,461 |
| Mason County, IL | $2,277 | $106,100 | 2.15% | 12,878 |
| McDonough County, IL | $2,238 | $103,500 | 2.16% | 27,102 |
| Fulton County, IL | $2,186 | $102,500 | 2.13% | 33,259 |
| Brown County, IL | $2,090 | $142,200 | 1.47% | 6,320 |
| Clark County, IL | $2,073 | $123,100 | 1.68% | 15,328 |
| Cumberland County, IL | $2,068 | $117,700 | 1.76% | 10,378 |
| Knox County, IL | $2,044 | $104,900 | 1.95% | 49,294 |
| Jefferson County, IL | $2,026 | $118,400 | 1.71% | 36,808 |
| Hancock County, IL | $2,020 | $108,400 | 1.86% | 17,434 |
| Cass County, IL | $2,007 | $95,500 | 2.10% | 12,826 |
| Macoupin County, IL | $1,990 | $126,100 | 1.58% | 44,566 |
| Shelby County, IL | $1,955 | $130,400 | 1.50% | 20,867 |
| Johnson County, IL | $1,952 | $148,200 | 1.32% | 13,350 |
| Schuyler County, IL | $1,940 | $106,200 | 1.83% | 6,826 |
| Warren County, IL | $1,921 | $101,300 | 1.90% | 16,576 |
| Christian County, IL | $1,896 | $112,100 | 1.69% | 33,684 |
| Randolph County, IL | $1,877 | $134,100 | 1.40% | 30,142 |
| Union County, IL | $1,851 | $131,700 | 1.41% | 16,972 |
| Crawford County, IL | $1,769 | $113,700 | 1.56% | 18,588 |
| Massac County, IL | $1,769 | $118,000 | 1.50% | 13,958 |
| Montgomery County, IL | $1,758 | $102,200 | 1.72% | 28,078 |
| Perry County, IL | $1,744 | $105,200 | 1.66% | 20,810 |
| Fayette County, IL | $1,740 | $114,700 | 1.52% | 21,380 |
| Marion County, IL | $1,709 | $100,100 | 1.71% | 37,294 |
| Henderson County, IL | $1,703 | $101,600 | 1.68% | 6,284 |
| Stark County, IL | $1,700 | $103,500 | 1.64% | 5,324 |
| Pope County, IL | $1,687 | $165,300 | 1.02% | 3,757 |
| Wayne County, IL | $1,670 | $109,400 | 1.53% | 15,994 |
| Vermilion County, IL | $1,666 | $92,900 | 1.79% | 73,179 |
| Richland County, IL | $1,618 | $106,600 | 1.52% | 15,675 |
| Greene County, IL | $1,564 | $94,400 | 1.66% | 11,837 |
| Pike County, IL | $1,557 | $100,100 | 1.55% | 14,625 |
| Wabash County, IL | $1,528 | $103,900 | 1.47% | 11,199 |
| Clay County, IL | $1,523 | $94,300 | 1.61% | 13,173 |
| Edgar County, IL | $1,478 | $95,700 | 1.54% | 16,637 |
| Hamilton County, IL | $1,470 | $108,800 | 1.35% | 7,972 |
| Saline County, IL | $1,445 | $92,900 | 1.55% | 23,387 |
| Edwards County, IL | $1,429 | $97,500 | 1.47% | 6,118 |
| Scott County, IL | $1,406 | $101,700 | 1.38% | 4,847 |
| White County, IL | $1,388 | $100,100 | 1.39% | 13,708 |
| Franklin County, IL | $1,316 | $87,700 | 1.50% | 37,541 |
| Gallatin County, IL | $1,276 | $84,700 | 1.51% | 4,857 |
| Lawrence County, IL | $1,156 | $95,500 | 1.21% | 15,137 |
| Hardin County, IL | $1,078 | $91,700 | 1.18% | 3,623 |
| Alexander County, IL | $966 | $58,700 | 1.65% | 5,042 |
| Pulaski County, IL | $668 | $81,000 | 0.82% | 5,074 |
*Derived rate = median taxes paid ÷ median home value — an estimate from two survey medians, not an official rate. Counties in bold detail pages are linked; all figures: US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023.
How assessment and appeals work in Illinois
The mechanics in Illinois follow the standard American pattern. A local assessor — generally a county office — estimates market value. Taxable value is what remains after exemptions. Each overlapping district (county, municipality, schools, and any special districts) applies its own rate, and the sum of those rates produces the bill the county collects.
Owners who think a property has been overvalued can appeal, first informally with the assessor and then formally to the review body named on the assessment notice. The strongest appeals rest on evidence: mistakes on the property record card, or sale prices of comparable homes that came in below the assessed value. Because filing windows are brief, check the deadline on your notice as soon as it arrives.
Statewide medians hide wide local variation, and Illinois is no exception: bills depend on where in the state a home sits and which districts tax it. Use this page to place a county in context, then verify the specifics for any single property with the county assessor.
Frequently asked questions
What is the median property tax in Illinois?
The median real estate tax paid in Illinois is $5,189 per year, on a median home value of $250,500 (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023).
Which Illinois county has the highest property taxes?
Among counties with published Census data, Lake County has the highest median real estate taxes paid at $8,743 per year.
Which Illinois county has the lowest property taxes?
Among counties with published Census data, Pulaski County has the lowest median real estate taxes paid at $668 per year.
How do I appeal a property tax assessment in Illinois?
Assessments in Illinois are handled locally, usually by the county assessor or an equivalent local office. If you believe your assessed value is too high, request your property record card, check it for errors, and file an appeal with the local board named on your assessment notice before the deadline printed on that notice — appeal windows are short, often 30 to 90 days.