St. Clair County, Illinois Property Taxes
Median St. Clair County effective property tax rate: 2.55%, significantly higher than the national median of 1.02%.
Median St. Clair County home value: $110,946
Median annual St. Clair County tax bill: $2,735, $335 higher than the national median property tax bill of $2,400.
How are property taxes in St. Clair County calculated?
Property taxes in St. Clair County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Belleville or another part of St. Clair County, knowing local tax details benefits homeowners and investors.
Last Updated March 1, 2025
St. Clair County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
2.55%
Estimate Property Tax Bill
$2,829
$2,625
Ownwell’s St. Clair County Property Tax Bill Calculator empowers homeowners, real estate investors, and potential buyers to estimate their annual property taxes in St. Clair County with just two data points. By entering your property's estimated assessed value, our calculator applies St. Clair County’s median effective tax rate to accurately estimate your property tax bill. Note that your property's assessed value — determined by your county — reflects any exemptions you may have, ensuring a more precise calculation for your property tax obligations. This insightful tool helps you understand potential tax liabilities and highlights how Ownwell can assist in reducing property taxes in St. Clair County. For those interested in more localized information, please scroll down to explore city-level trends!
Property Tax Rates Across St. Clair County, Illinois
Local government entities set tax rates, which can vary widely within a state. Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate. While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process. Below, you can compare St. Clair County's effective property tax rate to other counties in Illinois or the U.S. median property tax rate. St. Clair County has a median property tax rate of 2.55%, significantly higher than the national median of 1.02%. Within the county, East Saint Louis has the highest median tax rate at 4.61%, while Collinsville has the lowest at 2.11%. These figures highlight the substantial variation in property tax rates within a single county, reflecting the diverse financial needs and property values across different areas. Understanding these variations can help property owners make informed decisions about appealing their property taxes.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective St. Clair County Taxx Rate
2.55%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Illinois Taxx Rate
2.35%
Median Effective United States Tax Rate
0.99%
Property Tax Rates Across St. Clair County, Illinois
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Alorton | N/A | N/A | N/A | N/A | N/A |
| Belleville | 1.85% | 2.20% | 2.60% | 3.05% | 3.19% |
| Cahokia | N/A | N/A | N/A | N/A | N/A |
| Caseyville | 1.29% | 1.86% | 2.37% | 2.96% | 3.46% |
| Centreville | N/A | N/A | N/A | N/A | N/A |
| Collinsville | 1.45% | 1.90% | 2.11% | 2.45% | 2.58% |
| Columbia | 1.83% | 2.02% | 2.16% | 2.32% | 2.39% |
| Darmstadt | N/A | N/A | N/A | N/A | N/A |
| Dupo | 1.70% | 2.30% | 2.68% | 3.07% | 3.08% |
| East Carondelet | 1.60% | 2.11% | 2.56% | 2.77% | 3.25% |
| East Saint Louis | 1.45% | 3.31% | 4.61% | 6.62% | 6.62% |
| E St Louis | N/A | N/A | N/A | N/A | N/A |
| Fairmont City | N/A | N/A | N/A | N/A | N/A |
| Fairview Heights | 1.69% | 2.01% | 2.30% | 2.60% | 2.89% |
| Fayetteville | N/A | N/A | N/A | N/A | N/A |
| Freeburg | 2.03% | 2.38% | 2.57% | 2.72% | 2.89% |
| Lebanon | 1.84% | 2.27% | 2.52% | 2.96% | 2.96% |
| Lenzburg | 1.34% | 1.99% | 2.62% | 2.69% | 2.79% |
| Lovejoy | 1.90% | 4.60% | 4.60% | 4.60% | 4.60% |
| Marissa | 1.41% | 2.04% | 2.55% | 2.97% | 2.97% |
| Mascoutah | 1.85% | 2.32% | 2.54% | 2.82% | 2.82% |
| Millstadt | 1.84% | 2.15% | 2.33% | 2.47% | 2.65% |
| New Athens | 1.75% | 2.14% | 2.43% | 2.64% | 2.92% |
| New Baden | 1.72% | 2.16% | 2.34% | 2.84% | 2.84% |
| O Fallon | 1.91% | 2.22% | 2.40% | 2.55% | 2.60% |
| Red Bud | N/A | N/A | N/A | N/A | N/A |
| Saint Libory | 1.78% | 2.14% | 2.51% | 2.89% | 2.89% |
| Scott Air Force Base | N/A | N/A | N/A | N/A | N/A |
| Shiloh | 2.23% | 2.23% | 2.23% | 2.34% | 2.61% |
| Smithton | 2.06% | 2.41% | 2.60% | 2.68% | 2.89% |
| Summerfield | 1.49% | 2.38% | 2.97% | 2.97% | 2.97% |
| Swansea | 1.85% | 2.21% | 2.51% | 2.78% | 2.95% |
| Trenton | 1.95% | 2.22% | 2.43% | 2.73% | 2.77% |
| Troy | 1.76% | 2.06% | 2.22% | 2.31% | 2.46% |
| Waterloo | 1.63% | 1.96% | 2.20% | 2.47% | 2.66% |
Source: Ownwell
Property Tax Assessment Values Across St. Clair County, Illinois
When examining property taxes in St. Clair County, understanding the distinction between "market value" and "assessed value" is crucial. The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The St. Clair County Assessment Office estimates the market value for tax purposes. The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill. Assessment notices: In St. Clair County, assessment notices are sent in the spring each year. They’ll typically reach your mailbox by the middle of May. Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in St. Clair County. For example, the median tax bill in St. Clair County is $2,400, with tax bills ranging significantly across the county. Columbia has the highest median home price at $267,642.
Property Tax Assessment Values Across St. Clair County, Illinois
Source: Ownwell
$15,501
$141,572
$267,642
Median St. Clair County Assessed Value
$110,946
Median Illinois Assessed Value
$194,700
Median United States Assessed Value
$244,900
Property Tax Assessment Values Across St. Clair County, Illinois
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Alorton | N/A | N/A | N/A | N/A | N/A |
| Belleville | $62,905 | $85,095 | $120,393 | $187,216 | $268,849 |
| Cahokia | N/A | N/A | N/A | N/A | N/A |
| Caseyville | $24,183 | $52,536 | $90,246 | $139,311 | $318,447 |
| Centreville | N/A | N/A | N/A | N/A | N/A |
| Collinsville | $11,713 | $34,872 | $102,708 | $155,748 | $191,168 |
| Columbia | $79,241 | $164,175 | $267,642 | $360,975 | $470,194 |
| Darmstadt | N/A | N/A | N/A | N/A | N/A |
| Dupo | $26,938 | $63,160 | $94,401 | $136,956 | $163,086 |
| East Carondelet | $12,792 | $34,916 | $71,988 | $117,812 | $186,078 |
| East Saint Louis | $1,098 | $15,622 | $24,750 | $32,842 | $44,261 |
| E St Louis | N/A | N/A | N/A | N/A | N/A |
| Fairmont City | N/A | N/A | N/A | N/A | N/A |
| Fairview Heights | $62,078 | $92,430 | $122,655 | $178,766 | $231,153 |
| Fayetteville | N/A | N/A | N/A | N/A | N/A |
| Freeburg | $84,654 | $133,866 | $179,946 | $253,062 | $326,558 |
| Lebanon | $56,950 | $90,986 | $135,858 | $212,150 | $308,239 |
| Lenzburg | $11,624 | $34,873 | $70,023 | $105,988 | $154,007 |
| Lovejoy | $1,395 | $5,555 | $15,501 | $20,633 | $30,192 |
| Marissa | $14,995 | $45,584 | $67,784 | $96,604 | $137,576 |
| Mascoutah | $59,926 | $111,086 | $164,928 | $231,117 | $295,809 |
| Millstadt | $93,049 | $141,843 | $197,814 | $271,482 | $350,275 |
| New Athens | $35,659 | $71,250 | $99,603 | $142,236 | $203,806 |
| New Baden | $69,664 | $78,534 | $87,879 | $138,096 | $223,228 |
| O Fallon | $88,369 | $132,386 | $208,974 | $274,766 | $358,735 |
| Red Bud | N/A | N/A | N/A | N/A | N/A |
| Saint Libory | $15,531 | $68,948 | $99,063 | $130,954 | $174,207 |
| Scott Air Force Base | N/A | N/A | N/A | N/A | N/A |
| Shiloh | $65,056 | $125,625 | $179,901 | $183,282 | $201,334 |
| Smithton | $106,048 | $161,414 | $213,004 | $274,612 | $373,650 |
| Summerfield | $8,815 | $23,361 | $68,943 | $103,056 | $123,805 |
| Swansea | $72,143 | $98,376 | $143,751 | $204,033 | $285,225 |
| Trenton | $62,809 | $103,874 | $155,810 | $222,260 | $297,710 |
| Troy | $110,574 | $126,536 | $177,675 | $220,428 | $311,396 |
| Waterloo | $43,121 | $91,164 | $162,369 | $247,161 | $323,172 |
Source: Ownwell
Property Tax Bills Across St. Clair County, Illinois
In St. Clair County, IL, property tax bills are determined by assessing the value of a property and applying the local tax rate. The process begins with the county assessor evaluating the market value of a property, which then gets assessed at a fraction of its market value to determine the assessed value. This assessed value is crucial as it forms the basis for calculating the property tax bill. Local tax rates, which vary based on budgetary needs for public services like schools and infrastructure, are then applied to the assessed value. Homeowners in St. Clair County face a diverse range of tax bills, with the median home price at $110,946. The tax bill can range from the 25th percentile at $1,559 to the 90th percentile at $6,644. While Lovejoy boasts the lowest median tax bill at $575, Smithton sees the highest at $5,408. Compared to the national median property tax rate of 1.02%, St. Clair County's rates can significantly impact homeowners, influencing affordability and financial planning.
Median St. Clair County Tax Bill
$2,735
Median Illinois Tax Bill
$4,715
Median United States Tax Bill
$2,690
Property Tax Bills Across St. Clair County, Illinois
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Alorton | N/A | N/A | N/A | N/A | N/A |
| Belleville | $1,443 | $2,126 | $3,055 | $4,520 | $6,536 |
| Cahokia | N/A | N/A | N/A | N/A | N/A |
| Caseyville | $490 | $1,189 | $1,977 | $3,081 | $7,080 |
| Centreville | N/A | N/A | N/A | N/A | N/A |
| Collinsville | $192 | $707 | $2,031 | $3,183 | $4,017 |
| Columbia | $1,278 | $3,209 | $5,280 | $7,973 | $10,335 |
| Darmstadt | N/A | N/A | N/A | N/A | N/A |
| Dupo | $589 | $1,377 | $2,378 | $3,591 | $4,392 |
| East Carondelet | $367 | $892 | $1,686 | $2,693 | $4,325 |
| East Saint Louis | $172 | $557 | $1,075 | $1,603 | $2,049 |
| E St Louis | N/A | N/A | N/A | N/A | N/A |
| Fairmont City | N/A | N/A | N/A | N/A | N/A |
| Fairview Heights | $1,218 | $1,993 | $2,810 | $4,052 | $5,299 |
| Fayetteville | N/A | N/A | N/A | N/A | N/A |
| Freeburg | $1,709 | $3,114 | $4,439 | $6,434 | $8,497 |
| Lebanon | $1,099 | $2,191 | $3,370 | $5,039 | $7,134 |
| Lenzburg | $224 | $690 | $1,452 | $2,410 | $3,631 |
| Lovejoy | $55 | $118 | $575 | $859 | $1,330 |
| Marissa | $336 | $841 | $1,541 | $2,330 | $3,511 |
| Mascoutah | $1,078 | $2,477 | $3,778 | $5,549 | $7,386 |
| Millstadt | $1,693 | $3,056 | $4,433 | $6,298 | $8,128 |
| New Athens | $729 | $1,496 | $2,310 | $3,383 | $4,971 |
| New Baden | $1,450 | $1,741 | $2,317 | $3,180 | $4,968 |
| O Fallon | $1,685 | $2,865 | $4,577 | $6,426 | $8,456 |
| Red Bud | N/A | N/A | N/A | N/A | N/A |
| Saint Libory | $343 | $1,398 | $2,307 | $3,306 | $4,606 |
| Scott Air Force Base | N/A | N/A | N/A | N/A | N/A |
| Shiloh | $1,829 | $3,123 | $4,028 | $4,096 | $4,535 |
| Smithton | $2,368 | $3,816 | $5,408 | $7,045 | $9,513 |
| Summerfield | $259 | $606 | $1,704 | $2,556 | $3,318 |
| Swansea | $1,539 | $2,231 | $3,493 | $4,988 | $7,038 |
| Trenton | $1,147 | $2,340 | $3,677 | $5,282 | $7,509 |
| Troy | $2,030 | $2,534 | $3,878 | $5,496 | $6,933 |
| Waterloo | $819 | $1,799 | $3,289 | $5,392 | $7,174 |
Source: Ownwell