TaxBy County

Williamson County

Williamson County, Illinois

Effective Tax Rate

1.71%

Median Annual Tax

$2,490

How Williamson County Compares

Median Annual Property Tax

Williamson County$2,490
Illinois State Average$2,782
National Average$1,924

Williamson County

1.71%

Effective rate

Illinois Avg

1.90%

Effective rate

National Avg

0.91%

Effective rate

Tax by Mortgage Status

With Mortgage

$2,924

per year

Without Mortgage

$1,729

per year

Estimate Your Property Tax

$

Annual Tax

$2,490

Monthly Escrow

$208

Effective Rate

1.71%

vs. Illinois State Average▼ 10.5% below
vs. National Average▼ 7.4% below
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Frequently Asked Questions

What is the property tax rate in Williamson County, Illinois?
The effective property tax rate in Williamson County, Illinois is 1.71%. This rate is calculated by dividing the median property tax payment by the median home value in the county.
How much are property taxes in Williamson County?
The median annual property tax payment in Williamson County is $2,490. Homeowners with a mortgage pay a median of $2,924, while those without a mortgage pay $1,729.
How does Williamson County compare to the Illinois average?
Williamson County's effective tax rate of 1.71% is lower than the Illinois state average of 1.90%. The median annual property tax in Williamson County is $2,490, compared to the state average of $2,782.
What is the median home value in Williamson County, Illinois?
The median home value in Williamson County, Illinois is $145,600, according to U.S. Census Bureau American Community Survey 2019-2023 5-Year Estimates.
How are property taxes calculated in Illinois?
Property taxes in Illinois are calculated based on the assessed value of your property multiplied by the local mill levy (tax rate). The assessed value is determined by your county assessor and may differ from market value. Homeowners may qualify for exemptions such as homestead, senior, veteran, or disability exemptions that can reduce the taxable value. Tax rates vary by county and include levies for schools, municipal services, and special districts.

Counties with Similar Tax Rates

Jefferson County(IL)

Rate1.71%
Median Tax$2,026

Marion County(IL)

Rate1.71%
Median Tax$1,709

Monroe County(IL)

Rate1.70%
Median Tax$4,523

Montgomery County(IL)

Rate1.72%
Median Tax$1,758
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Data from U.S. Census Bureau, American Community Survey 2019-2023 5-Year Estimates. Effective tax rate is calculated as median property tax divided by median home value.

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