Montgomery homeowners paid property taxes equal to 2.3% of their home’s value in the fourth quarter of 2025—an amount more than 2.6 times above the national average, according to BlockShopper.com.
According to data covering the same period, the median sales price for a Montgomery home was $380,000, with 19 properties changing hands. For 2025, the city’s median annual tax bill reached $8,785, which totals 2.3% of the median assessed value for taxed homes.
The average effective property tax rate nationally stood at 0.888% in 2024.
Within Kendall County, Aurora and Yorkville recorded the first- and second-highest effective tax rates among cities.
This analysis calculated the 2025 effective property tax rate using estimated inflation data and county tax information from 2023; actual rates may vary slightly from these figures.
According to Redfin data, U.S. home prices climbed again in 2025, with the national median hitting about $447,000 in June, up 1.13% from the prior year. Redfin’s data highlights that the supply-demand gap grew, with 36% more sellers than buyers—a difference of 508,715 homes. By Redfin’s criteria, a market is considered balanced if seller and buyer numbers are within 10% of each other.
The table below presents a comparison of Aurora with other cities in Kendall County regarding their median effective property tax rates, calculated from fourth-quarter 2025 sales and property tax data.
| City | Q4 2025 Sales | Q4 2025 Median Price | Median tax 2025 | Effective tax rate |
|---|---|---|---|---|
| Aurora | 12 | $306,700 | $10,265 | 3.3% |
| Yorkville | 64 | $332,500 | $8,750 | 2.6% |
| Plano | 39 | $261,500 | $6,521 | 2.5% |
| Bristol | 3 | $280,000 | $7,081 | 2.5% |
| Oswego | 88 | $388,000 | $8,863 | 2.3% |
| Montgomery | 19 | $380,000 | $8,785 | 2.3% |
| Joliet | 18 | $370,500 | $8,099 | 2.2% |
| Boulder Hill | 30 | $284,500 | $6,027 | 2.1% |
| Plainfield | 5 | $660,000 | $14,093 | 2.1% |
| Newark | 10 | $378,750 | $6,665 | 1.8% |
| Minooka | 8 | $725,000 | $8,096 | 1.1% |
