In Williamson County, Illinois the effective property tax rate is 1.71%. The median homeowner pays $2,490 a year in real estate taxes on a home with a median value of $145,600. That rate is the 61st highest of the 102 Illinois counties with published data, and the 211th highest of 3,132 counties in the United States.
Property tax in Williamson County
The effective rate is the median real estate tax paid divided by the median home value. The Illinois statewide average is 2.07%, so Williamson County is below it. Applying this county's rate to other home prices gives a rough idea of the yearly bill; actual bills depend on the school district, exemptions and the assessed value.
| Home value | Estimated tax per year | Per month |
|---|---|---|
| $145,600 (county median) | $2,490 | $208 |
| $200,000 | $3,420 | $285 |
| $300,000 | $5,130 | $428 |
| $400,000 | $6,840 | $570 |
| $500,000 | $8,550 | $713 |
Home values and incomes
The median home value is $145,600 (37th highest in Illinois, 2071st highest nationally) and the median household income is $65,521. Homes cost about 2.2 times a typical household's yearly income. Median gross rent is $897 a month. 71.1% of occupied homes are owner-occupied. Homeowners with a mortgage pay a median of $1,389 a year for insurance. For comparison, the Illinois statewide median home value is $295,943.
Counties near Williamson County in the Illinois property tax ranking
| County | Effective rate | Median home value |
|---|---|---|
| Montgomery County | 1.72% | $102,200 |
| Jefferson County | 1.71% | $118,400 |
| Marion County | 1.71% | $100,100 |
| Williamson County | 1.71% | $145,600 |
| Monroe County | 1.70% | $265,600 |
| Christian County | 1.69% | $112,100 |
| Clark County | 1.68% | $123,100 |
Frequently asked questions
What is the property tax rate in Williamson County, Illinois?
The effective property tax rate is 1.71% of home value per year, the 61st highest of 102 counties in Illinois (Census ACS 2023 5-year estimates).
How much is property tax on a $300,000 home in Williamson County?
At the county's effective rate of 1.71%, about $5,130 a year (roughly $428 a month). Your actual bill depends on the assessed value, your school district and exemptions.
What is the median home value in Williamson County?
The median home value is $145,600 (Census ACS 2023 5-year estimates, owner-occupied homes).
What is the median household income in Williamson County?
The median household income is $65,521 (Census ACS 2023 5-year estimates).