Homeowners in Algonquin, McHenry County, pay about 2.24% of their home's value in property tax each year. The median bill is $8,025.
At Algonquin's typical rate of 2.24%. Exemptions lower the real bill.
| Home value | Property tax (estimate) |
|---|---|
| $250,000 | $5,595 |
| $350,000 | $7,833 |
| $450,000 | $10,071 |
| $600,000 | $13,428 |
| $800,000 | $17,904 |
A family with a $351,000 home in Algonquin pays about $7,856 in property tax. With $120,000 of income they also pay about $5,940 in Illinois income tax, so their SALT deduction is $13,796 — 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 |
|---|---|---|---|
| Lake in the Hills | McHenry | 2.26% | $7,430 |
| Carpentersville | Kane | 2.07% | $5,270 |
| Gilberts | Kane | 2.23% | $8,462 |
| Sleepy Hollow | Kane | 2.14% | $8,661 |
| Cary | McHenry | 2.60% | $8,089 |
| Crystal Lake | McHenry | 2.42% | $7,720 |
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 Algonquin pay a typical effective property tax rate of 2.24% of home value per year. The median annual bill is $8,025 and the median home value is $351,000 (U.S. Census ACS 2020–2024).
About $8,952 per year at Algonquin's typical rate of 2.24%. The homeowner exemption and other exemptions lower the actual bill.
Algonquin's typical rate of 2.24% is about the same as the McHenry 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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