Homeowners in Grayslake, Lake County, pay about 3.02% of their home's value in property tax each year. The median bill is $10,000+.
At Grayslake's typical rate of 3.02%. Exemptions lower the real bill.
| Home value | Property tax (estimate) |
|---|---|
| $250,000 | $7,542 |
| $350,000 | $10,559 |
| $450,000 | $13,576 |
| $600,000 | $18,101 |
| $800,000 | $24,135 |
A family with a $309,500 home in Grayslake pays about $9,337 in property tax. With $120,000 of income they also pay about $5,940 in Illinois income tax, so their SALT deduction is $15,277 — under the $40,400 cap. That alone does not beat the $32,200 standard deduction for married couples; mortgage interest and charity decide the rest.
| Town | County | Rate | Median bill |
|---|---|---|---|
| Hainesville | Lake | 2.96% | $6,558 |
| Round Lake Park | Lake | 1.32% | — |
| Gages Lake | Lake | 2.40% | $7,233 |
| Round Lake Beach | Lake | 2.72% | $5,765 |
| Round Lake | Lake | 3.00% | $7,860 |
| Venetian Village | Lake | 2.71% | $5,987 |
Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Unofficial estimate, not a tax bill. Updated 2026-10-08.
Homeowners in Grayslake pay a typical effective property tax rate of 3.02% of home value per year. The median annual bill is $10,000+ and the median home value is $309,500 (U.S. Census ACS 2020–2024).
About $12,068 per year at Grayslake's typical rate of 3.02%. The homeowner exemption and other exemptions lower the actual bill.
Grayslake's typical rate of 3.02% is higher than the Lake County average of 2.26%.
Yes, if you itemize. For 2026, property tax plus Illinois income tax count toward the SALT deduction, capped at $40,400 ($20,200 if married filing separately) and reduced above $505,000 of income. Itemizing helps only if your total deductions beat the standard deduction: $32,200 married filing jointly, $16,100 single, $24,150 head of household.
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