Total monthly cost of ownership
Cost to Own a Home in Boulder Hill, Illinois
A $233,000 home here costs
$2,207per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $1,198. The real number is $1,009 higher every month — 84% more than the payment most buyers budget for.
Where every dollar goes
Only the first line is a mortgage payment. Change any assumption above and every figure below recalculates.
Boulder Hill against Kendall County and Illinois
| Measure | Boulder Hill | Kendall County |
|---|---|---|
| Median home value | $233,100 | $298,900 |
| Median property tax | $5,294 | $7,556 |
| Effective tax rate | 2.271% | 2.528% |
| Median gross rent | $1,759 | $1,763 |
| Population | 9,127 | 135,053 |
The weather behind that power bill
Boulder Hill sits in Kendall County, which averages a high of 84.4°F in its hottest month and a low of 14.7°F in its coldest, with 33.84" of precipitation a year and 35% of it in a single three-month stretch. That climate drives 781 cooling and 6,433 heating degree days, which is what sets the $214 electricity line above.
See the full climate breakdown for Kendall County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Kendall County
Full Kendall County cost breakdown · Every county in Illinois
Common questions
How much does it cost to own a home in Boulder Hill?
A $233,000 home in Boulder Hill, Illinois costs approximately $2,207 per month with 20% down at 6.66%. That is $1,198 principal and interest, $441 property tax, $91 homeowners insurance, $282 utilities and $194 set aside for maintenance.
What is the property tax rate in Boulder Hill?
Boulder Hill has an effective property tax rate of 2.271%, based on a median home value of $233,100 and median real estate taxes of $5,294. That is lower than the Kendall County average of 2.528%.
What is the average home price in Boulder Hill?
The median owner-occupied home value in Boulder Hill, Illinois is $233,100, against $298,900 across Kendall County.
Is it cheaper to rent or buy in Boulder Hill?
Median gross rent in Boulder Hill is $1,759 a month, against $2,207 to own the median home all in. Renting costs less month to month here, though renting builds no equity.
Sources & methodology
- Median home value, real estate taxes, gross rent and population for Boulder Hill — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance — NAIC average premium for Illinois.
- Electricity price — EIA Electric Power Monthly Table 5.6.A.
- Mortgage rate — Freddie Mac PMMS, refreshed weekly.
- Maintenance (1%/yr) and water and sewer ($68/mo) are national estimates. Every assumption above is editable.