Homeowners in Mount Prospect, Cook County, pay about 2.04% of their home's value in property tax each year. The median bill is $8,425.
At Mount Prospect's typical rate of 2.04%. Exemptions lower the real bill.
| Home value | Property tax (estimate) |
|---|---|
| $250,000 | $5,094 |
| $350,000 | $7,132 |
| $450,000 | $9,169 |
| $600,000 | $12,226 |
| $800,000 | $16,301 |
A family with a $397,400 home in Mount Prospect pays about $8,098 in property tax. With $120,000 of income they also pay about $5,940 in Illinois income tax, so their SALT deduction is $14,038 — 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 |
|---|---|---|---|
| Des Plaines | Cook | 1.88% | $6,344 |
| Prospect Heights | Cook | 2.12% | $7,289 |
| Arlington Heights | Cook | 1.98% | $8,759 |
| Rolling Meadows | Cook | 2.18% | $6,636 |
| Wheeling | Cook | 2.14% | $6,029 |
| Elk Grove Village | Cook | 1.79% | $6,728 |
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 Mount Prospect pay a typical effective property tax rate of 2.04% of home value per year. The median annual bill is $8,425 and the median home value is $397,400 (U.S. Census ACS 2020–2024).
About $8,151 per year at Mount Prospect's typical rate of 2.04%. The homeowner exemption and other exemptions lower the actual bill.
Mount Prospect's typical rate of 2.04% is higher than the Cook County average of 1.73%.
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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