Real Estate Values and Property Tax Valuation in St. Clair County, Illinois

St. Clair County has 94,183 properties with a cumulative value of $11.2B, making up 1.60% of all real estate value in Illinois. Property taxes in St. Clair County amount to $277.7M, with an average homeowner paying $2,956 in property taxes compared to the state average of $5,405. The average property tax rate in St. Clair County is 2.47%, which is the same as the state average. Property taxes are calculated based on the assessed value of the property.

In Illinois, property taxes are based on the value of the property as of January 1st. Property owners have the option to appeal their property taxes between June and December, or within 30 days of when the notices are published. Property tax bills are issued on February 1st and July 1st, with the first installment due on June 1st in Cook County. This first installment is estimated at 55% of the prior year's tax bill, with taxes paid in arrears.

Important Dates
Property Valuation Date:January 1st
Property Tax Appeal Deadline:June - December or 30 days after notices are published
Property Tax Bills Issued:February 1st and July 1st
Real Property Tax Bill Due (1st of #):June, Two installments but due dates may vary by county March 1st, Cook County - 1st half installment, estimated at 55% of prior year tax bill with taxes paid in arrears.
Real Property Tax Bill Due (2nd of #):September, Two installments but due dates may vary by county August 1, Cook County - 2nd half installment - TARGETED but may be delayed - due 30 days after being issued. Reconciled installment using the BOR certified AV, actual local tax rate, and final state equalization factor, less the estimated 1st installment with taxes paid in arrears
Available Exemptions
SeniorAvailable
DisabledAvailable
HomesteadAvailable
VeteranAvailable
Solar/WindAvailable
CharitableAvailable

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Real Estate Statistics in St. Clair County

Total Real Estate Value
$11.2B
Total Real Property Taxes
$277.7M
Average Property Tax Rate
2.47%
# of Real Properties
94.2K

Residential Property Taxes by Cities in St. Clair County

St. Clair County has an average property tax rate of 2.47%, which is slightly lower than the national average of 2.58%. This rate is applied to all properties in the county, regardless of their location. However, the effective property tax rate can vary significantly across the cities in St. Clair County. For example, East Saint Louis has the highest effective property tax rate at 3.72%, while Collinsville has the lowest effective property tax rate at 2.11%. This means that property owners in East Saint Louis will pay significantly more in property taxes than those in Collinsville.

Overall, St. Clair County has a relatively low property tax rate compared to other counties in the state. However, property owners should be aware that the effective property tax rate can vary significantly across the cities in the county. This means that property owners should research the effective property tax rate in their city before making any decisions about purchasing or selling property in St. Clair County.

Tax Assessment Value

The following table shows the 10th, 25th, 50th, 75th, and 90th percentile of property assessment value in each city in St. Clair County. The tax assessment value may differ from the potential sale value, and is used to calculate the property tax for each piece of real estate.

City10th Percentile25th PercentileMedian75th Percentile90th Percentile
Belleville$56,357$75,507$106,449$164,827$235,687
Caseyville$23,084$47,337$80,514$122,025$281,629
Collinsville$11,750$35,460$93,320$140,247$172,268
Columbia$61,442$140,030$216,402$298,592$395,185
Dupo$25,508$55,166$80,290$116,942$140,940
East Carondelet$14,029$32,316$66,024$101,354$159,622
East Saint Louis$2,114$15,979$23,700$31,562$42,268
Fairview Heights$57,691$83,421$110,244$160,596$208,081
Freeburg$76,427$116,067$154,764$216,495$280,386
Lebanon$47,784$79,683$113,223$176,806$261,961
Lenzburg$12,050$34,180$67,899$103,360$147,618
Marissa$14,804$44,299$65,570$93,019$134,204
Mascoutah$54,894$97,397$144,843$204,476$262,555
Millstadt$79,341$120,200$168,204$232,740$298,905
New Athens$37,622$70,687$97,119$135,898$192,213
O Fallon$78,473$117,783$185,862$244,707$314,710
Saint Libory$16,321$68,312$97,062$128,912$174,499
Smithton$94,238$139,968$188,652$238,824$321,878
Swansea$65,151$88,062$128,817$182,343$254,727
Waterloo$38,358$80,528$134,400$200,530$259,757

Property Tax Bill

This table shows the percentiles of actual property tax paid on residential properties for each city in St. Clair County.

City10th Percentile25th PercentileMedian75th Percentile90th Percentile
Belleville$868$1,862$2,812$4,224$6,135
Caseyville$322$985$1,828$2,917$6,429
Collinsville$117$554$1,890$3,091$3,929
Columbia$967$2,595$4,849$7,517$9,815
Dupo$372$1,184$2,215$3,396$4,228
East Carondelet$203$673$1,490$2,562$3,934
East Saint Louis$0$51$818$1,464$1,949
Fairview Heights$709$1,755$2,566$3,869$5,043
Freeburg$1,147$2,788$4,155$6,073$8,049
Lebanon$405$1,815$3,022$4,632$6,499
Lenzburg$158$564$1,316$2,358$3,441
Marissa$173$637$1,470$2,240$3,399
Mascoutah$121$1,801$3,262$5,067$6,885
Millstadt$1,188$2,814$4,108$5,966$7,640
New Athens$588$1,353$2,219$3,227$4,774
O Fallon$285$2,241$4,057$6,023$7,839
Saint Libory$248$1,223$2,197$3,137$4,599
Smithton$1,410$3,342$5,036$6,589$9,011
Swansea$1,135$2,001$3,259$4,751$6,770
Waterloo$693$1,574$2,870$4,845$6,665

Effective Property Tax Rate

The effective property tax rate is calculated by dividing the property tax bill by the assessed value. For the percentiles below, the calculation is performed using the percentiles for property tax bill and assessed value above. Therefore, each consecutive percentile doesn't necessarily show a larger value.

City10th Percentile25th PercentileMedian75th Percentile90th Percentile
Belleville 1.54% 2.47% 2.64% 2.56% 2.60%
Caseyville 1.39% 2.08% 2.27% 2.39% 2.28%
Collinsville 1.00% 1.56% 2.03% 2.20% 2.28%
Columbia 1.57% 1.85% 2.24% 2.52% 2.48%
Dupo 1.46% 2.15% 2.76% 2.90% 3.00%
East Carondelet 1.45% 2.08% 2.26% 2.53% 2.46%
East Saint Louis 0.00% 0.32% 3.45% 4.64% 4.61%
Fairview Heights 1.23% 2.10% 2.33% 2.41% 2.42%
Freeburg 1.50% 2.40% 2.68% 2.81% 2.87%
Lebanon 0.85% 2.28% 2.67% 2.62% 2.48%
Lenzburg 1.31% 1.65% 1.94% 2.28% 2.33%
Marissa 1.17% 1.44% 2.24% 2.41% 2.53%
Mascoutah 0.22% 1.85% 2.25% 2.48% 2.62%
Millstadt 1.50% 2.34% 2.44% 2.56% 2.56%
New Athens 1.56% 1.91% 2.28% 2.37% 2.48%
O Fallon 0.36% 1.90% 2.18% 2.46% 2.49%
Saint Libory 1.52% 1.79% 2.26% 2.43% 2.64%
Smithton 1.50% 2.39% 2.67% 2.76% 2.80%
Swansea 1.74% 2.27% 2.53% 2.61% 2.66%
Waterloo 1.81% 1.95% 2.14% 2.42% 2.57%

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Real Estate Values in St. Clair County

The median home price in St. Clair County, Illinois decreased by 13.18% from October 2022 to October 2023, from $220.0K to $191.0K. This decrease in home prices was accompanied by a decrease in home inventory, from 709 in October 2022 to 670 in October 2023. This suggests that the housing market in St. Clair County is cooling off, with fewer homes available and lower prices.

Median Sale Value
$191.0K
Total Active Listings
670
Annual percent change in median sale price
-13.18%

Average Home Value in St. Clair County, Illinois

Last updated: November 2023

Percent Change in Total Home Sales in St. Clair County

Last updated: November 2023

Percent Change in New Home Listings in St. Clair County

Last updated: November 2023

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Mortgage Rates in St. Clair County

St. Clair County has a total of $6.5 billion in outstanding home mortgage loans. This represents 37,200 loans, or about 8.2% of the total home value in the county. The median mortgage rate in St. Clair County varies significantly across cities, with East Saint Louis having the highest median rate at 5.11%, and Columbia having the lowest at 4.12%. This variation in rates across cities can have a significant impact on the amount of money a homeowner pays in interest over the life of their loan.

Overall, St. Clair County has a large amount of outstanding home mortgage loans, representing a significant portion of the total home value in the county. Homeowners should take the time to shop around and compare rates across cities to ensure they are getting the best deal on their mortgage. Doing so can save them a significant amount of money over the life of their loan.

# of Outstanding Loans
37.2K
Total Outstanding Loan Amount
$6.5B
Properties with Loans
39.46%

Outstanding Mortgages

The table below shows the percentile distribution of outstanding loans on residential properties in St. Clair County by city.

City10th Percentile25th PercentileMedian75th Percentile90th Percentile
Belleville$41,619$63,207$100,904$153,235$217,775
Caseyville$34,199$53,083$88,199$171,822$300,284
Collinsville$38,962$63,516$92,978$125,583$166,120
Columbia$56,583$115,753$184,268$287,435$405,431
Dupo$38,060$52,382$74,137$106,886$136,385
East Carondelet$23,098$38,306$68,210$117,820$171,590
East Saint Louis$17,447$28,876$39,701$55,075$124,776
Fairview Heights$45,662$67,441$99,750$144,750$199,612
Freeburg$47,521$81,800$119,698$176,557$253,723
Lebanon$47,386$72,591$108,327$185,054$286,726
Lenzburg$22,607$43,262$69,372$135,266$242,625
Marissa$21,348$34,364$59,175$99,118$152,141
Mascoutah$53,426$92,827$134,828$188,922$248,066
Millstadt$50,786$83,420$124,446$178,660$253,988
New Athens$32,225$52,486$76,882$115,498$179,072
O Fallon$65,176$102,633$155,991$225,833$305,947
Saint Libory$35,307$62,538$97,748$133,167$157,503
Smithton$57,214$92,641$135,211$194,788$260,116
Swansea$46,879$70,191$113,248$169,334$242,633
Waterloo$44,004$75,390$99,491$195,486$272,729

Mortgage Rates

The following table shows the 10th, 25th, 50th, 75th, and 90th percentile of mortgage rates in cities across St. Clair County.

City10th Percentile25th PercentileMedian75th Percentile90th Percentile
Belleville 3.00% 3.62% 4.50% 5.85% 6.54%
Caseyville 3.12% 3.62% 4.45% 5.78% 6.50%
Collinsville 3.11% 3.75% 4.50% 5.87% 6.54%
Columbia 2.87% 3.55% 4.12% 5.69% 6.48%
Dupo 3.12% 3.75% 4.62% 5.86% 6.54%
East Carondelet 3.24% 3.89% 5.10% 6.17% 6.82%
East Saint Louis 3.37% 3.92% 5.11% 6.27% 7.23%
Fairview Heights 3.00% 3.70% 4.50% 5.86% 6.54%
Freeburg 2.90% 3.56% 4.37% 5.63% 6.39%
Lebanon 2.90% 3.62% 4.32% 5.62% 6.44%
Lenzburg 3.27% 3.94% 5.10% 6.25% 7.10%
Marissa 3.25% 3.87% 4.67% 5.88% 6.71%
Mascoutah 2.90% 3.50% 4.25% 5.50% 6.38%
Millstadt 3.10% 3.75% 4.40% 5.83% 6.49%
New Athens 3.00% 3.75% 4.47% 5.86% 6.60%
O Fallon 2.90% 3.50% 4.25% 5.62% 6.40%
Saint Libory 3.31% 3.90% 4.40% 5.63% 6.25%
Smithton 3.05% 3.62% 4.39% 5.78% 6.43%
Swansea 2.90% 3.57% 4.38% 5.71% 6.49%
Waterloo 3.21% 3.67% 4.56% 6.12% 6.53%

Housing Expenses in St. Clair County, Illinois

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Frequently asked questions

We currently operate in Texas, California, Washington, Georgia, Florida and Illinois.
We use a private national data provider that cross-references with county recorder's offices to verify ownership. If in the event our system is unable to verify the property, our team will take further steps to investigate ownership and reach out to the customer for confirmation.
Our success rate varies across geographies; however, in any given year, we typically win more than 70% of our cases, saving clients an average of $1,457 on their property taxes.
Yes, in the market areas we serve, we have a dedicated Property Tax Consultant that is physically present in the market they are servicing. The specialist assigned to your property has the necessary geographical competence to provide exemplary service!
The average property tax rate in St. Clair County is 2.47%.
The following exemptions and discounts are available in St. Clair County: Charitable, Disabled, Homestead and Senior