Illinois · County property tax · ACS 2024
Cook County Property Taxes
The median homeowner in Cook County pays $6,191 a year, an effective rate of 1.91%, far above the U.S. average.
- $6,191
- Median tax / yr · Highest-decile bill
- 1.91%
- Effective rate · Highest-decile rate
- +211%
- vs U.S. average
- #41 of 102
- rank in IL
The verdict
Homeowners in Cook County pay a median $6,191 a year in property tax, an effective rate of 1.91%, more affordable than 4% of U.S. counties (Census ACS 2024).
- $6,191
- Median annual tax bill, 2024
- 1.91%
- Effective rate on median home
- #3025 of 3135
- U.S. counties by tax burden
- +211%
- vs the national average bill
Effective rate is the median property tax bill divided by the median home value ($324,500). U.S. Census Bureau, ACS 5-Year Estimates · 2024.
Census Bureau ACS property tax data for Illinois. Population: 5,182,090. Owner-occupied homes: 1,212,570.
The median annual property tax in Cook County is $6,191, which is 17% higher than the Illinois state average and 211% above the national average. The effective tax rate is 1.91% on a median home value of $324,500. Property taxes represent 7.4% of the median household income in this county.
Why Cook County's ACS bill runs high vs the U.S.
Primary signal
The bill sits well above the national median
Homeowners in Cook County pay a median annual property tax of $6,191, far above the national median and notably higher than the Illinois state median. On a $324,500 median home, that works out to an effective rate of 1.91% once the local assessment base and millage are combined.
Decision signal 2
Income carries a heavy tax share
Property taxes in Cook County run well above the commonly cited 2%-4% national benchmark, at about 7.4% of the $83,498 median household income.
Decision signal 3
The effective rate is a national headwind
Cook County's 1.91% effective rate is among the highest of 3,135 tracked counties: only about 96% pay more.
Decision signal 4
Near the middle of Illinois counties by effective rate
Cook County ranks #41 of 102 counties in Illinois by effective rate (60% of in-state counties pay a lower rate).
Informational notice
Figures describe the median homeowner household in Cook County as reported to the Census Bureau; your parcel can differ. Not tax, legal, or financial advice: check the county assessor or a qualified professional before decisions that depend on these numbers.
Most of the market's rise reached the bill
The effective rate here moved 8.7% down between 2020 and 2024, a smaller shift than in 65% of U.S. counties. With the median home value rose 27.0%, the median bill rose 15.9% to $6,191: the rate did comparatively little to offset the market.
Effective rate is the published median bill divided by the published median home value, so the two multiply back to the bill exactly; the rate's movement here is derived from those two figures rather than read from the rounded published rate. Both are ACS 5-year survey estimates for the median owner-occupied household, compared across non-overlapping releases. They describe what the Census published, not a local policy, assessment, or exemption change.
How to read this county's bill
Bills rose across 2020-2024, from $5,342 to $6,191, a gain of 16%. This is a comparison of published ACS medians, not an explanation of a particular property's assessment or tax bill.
The heaviest band is also the fullest one here: 932,612 of 1,212,570 owner-occupied homes (76.9%) report annual real-estate taxes above $3,000. That band has no upper edge in the source, so the county median understates the burden carried by the plurality rather than describing it.
Both figures are in the national top quarter, and the median bill still equals only 7.4% of median household income. A high rate on high earnings produces a large dollar figure, and only the dollar figure tends to get quoted; the ratio above is the other half.
The share above is the median annual bill divided by median household income, a ratio of two county-level medians rather than a household-by-household figure.
What Cook County Homeowners Actually Pay
The single largest group of Cook County homeowners, 932,612 of 1,212,570 owner-occupied homes (76.9%), pays $3,000 or more a year. The median is one point in this spread, not a typical bill.
- Less than $800 3.1% (38,095)
- $800 to $1,499 4.4% (52,850)
- $1,500 to $1,999 3.3% (40,385)
- $2,000 to $2,999 7.9% (96,090)
- $3,000 or more 76.9% (932,612)
Census ACS 2024, table B25102. Bands and the no-tax share sum to 100%.
52,538 homes here (4.3%) report no real estate tax at all. Exemptions are set by state: how Illinois handles assessments and appeals.
With vs Without Mortgage
In Cook County, mortgaged homeowners pay 15% more than those without a mortgage, a gap that typically tracks higher home values rather than a different tax rate.
Cook County's bill vs state & U.S. medians
Median annual bill bars around Cook County's SPIKE ACS 2024 figure.
Cook County's median bill is 17% above the Illinois median and 211% above the U.S. median.
Among the highest-taxed counties in the country
At 1.91%, Cook County sits in the top 4% of all U.S. counties by effective property-tax rate. That is the rate, not the bill: a high rate on a modest home can still produce a smaller cheque than a low rate on an expensive one, which is why the $6,191 median bill is the number to compare against another county.
Cook County vs Benchmarks
| Metric | Cook County | Illinois Avg | U.S. Avg |
|---|---|---|---|
| Median Annual Tax Highest-decile bill | |||
| Effective Tax Rate Highest-decile rate | |||
| Median Home Value | |||
| Tax as % of income Highest-decile income burden | 7.4% | - | - |
Source: U.S. Census Bureau, ACS 5-Year Estimates. Tax-burden differences across rows reflect millage decisions, assessment-ratio practices, and the residential-vs-commercial mix of each tax base.
Is Cook County's $6,191 median bill appeal-worthy?
At Cook County's $6,191 ACS median (SPIKE), a 10% assessment cut is worth about $619/yr before exemptions. Appeal Savings Estimator · appeal guide for Illinois.
Cook County bill trail · SPIKE
| Year | Median Tax (vs prior release) | Effective Rate |
|---|---|---|
| 2024 | $6,191 +2.3% | 1.91% |
| 2023 | $6,053 +1.9% | 1.98% |
| 2022 | $5,941 +6.2% | 2.02% |
| 2021 | $5,593 +4.7% | 2.10% |
| 2020 | $5,342 | 2.09% |
Each row is a separate ACS 5-year release, and consecutive releases share four of their five survey years. The percentage beside each bill is therefore movement in the published estimate against the previous release, not a single year's tax change. The two releases largely describe the same households. For change over time, compare releases that do not overlap.
Cook County: tax takes 7.4% of income
Counties near Cook County's median bill
On effective rate, Cook County sits nearest South Central Connecticut Planning Region (CT), Essex County (NJ), Dutchess County (NY).
On published median-tax change, the nearest matches are McCormick County (SC), Mercer County (MO), Jessamine County (KY).
How peers are chosen
These are the nearest cross-state matches in the published Census data, not neighboring counties or recommendations. Peers are rebuilt with each data release; see the calculation method.
Similar effective rates
Similar published median-tax changes, 2020–2024
Cook County: only 9% of returns show Schedule A real-estate tax
Tax year 2022: 226,120 of 2,501,880 returns from Cook County reported real estate taxes, averaging $10,421 - 33% of those reporters sat in the $200k+ AGI band.
What this IRS county file does not say
Amounts are reported before the SALT cap, not deducted; the share is of filers, not homeowners. Source: IRS SOI county data, tax year 2022.
Other Counties in Illinois
Cook County bill FAQs
- How does Cook County property tax compare to the national average?
- Property taxes in Cook County run far above the national median of $1,993, an effective rate of 1.91% versus 0.92% nationally.
- What percentage of income goes to property taxes in Cook County?
- Property taxes in Cook County run well above the commonly cited 2%-4% national benchmark, at about 7.4% of the $83,498 median household income.
- What is the average property tax in Cook County, Illinois?
- The median annual property tax in Cook County is $6,191, an effective rate of 1.91% on a $324,500 median home (Census ACS, 2024).
- What is the tax affordability score for Cook County?
- Cook County, Illinois scores F (4/100) on PlainPropertyTax's tax affordability composite across 5 Census ACS dimensions (effective rate, bill size, income share, mortgage gap, and home-value/income). Its strongest scored dimension here is housing pressure at F (3.89×). The score compares published county medians to U.S. percentiles, it is not a personal bill and not advice to buy, sell, appeal, or relocate.
- Are property taxes increasing in Cook County?
- The ACS median property-tax bill for Cook County climbed 15.9% between the 2020 and 2024 5-year releases, from $5,342 to $6,191, a 4-year span. These are survey estimates covering five years each, so this compares the two releases furthest apart rather than consecutive ones, which overlap and would mostly measure the same households twice.
What to do with Cook County's SPIKE bill
Cook County's $6,191 median bill sits well above the U.S. median - size a personal estimate before treating the county headline as your budget. Estimate your bill →
Income burden is elevated here: about 7.4% of Cook County's $83,498 median household income goes to the property-tax bill.
Nationwide peers by median bill (then rate)
Bill-first peers for Cook County's SPIKE median, then a disjoint out-of-state rate set, not the same-state geography lattice.
Similar effective rate
Nearest out-of-state counties by ACS effective rate. This county: 1.91%.
Similar median bill
Nearest out-of-state counties by ACS median annual tax. This county: $6,191/yr. Rate peers are excluded so the two link sets stay distinct.
Read with Cook County
Nearest ABS(median_tax) ACS peers for Cook County (PEAK · SPIKE), replacing the old fixed Keep exploring strip.
PEAK SPIKE
Ulster County, NY
ABS(median_tax) peer · $6,238/yr (near-tied bill ABS $47); rate 1.77% vs Cook County 1.91%.
Richmond County, NY
ABS(median_tax) peer · $6,247/yr (higher bill ABS $56); rate 0.92% vs Cook County 1.91%.
Delaware County, PA
ABS(median_tax) peer · $6,124/yr (lower bill ABS $67); rate 1.84% vs Cook County 1.91%.
Queens County, NY
ABS(median_tax) peer · $6,297/yr (higher bill ABS $106); rate 0.87% vs Cook County 1.91%.
Illinois county set
State ACS overview for every published Illinois county rate and median bill.
Appeal filing windows
Cook County stamps PEAK · SPIKE - review notice deadlines before quoting the ACS median.
Data vintage and method
Data as of 2024. Source: U.S. Census Bureau, American Community Survey 5-Year Estimates.
Property tax data reflects median amounts paid by homeowners. Effective rates are calculated as median tax divided by median home value.
Source: U.S. Census Bureau American Community Survey 5-Year Estimates, county median real-estate taxes · 2024 Cook County (PEAK · SPIKE) - ACS medians, not a parcel bill.