Total monthly cost of ownership
Cost to Own a Home in Rock Falls, Illinois
A $82,000 home here costs
$996per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $422. The real number is $575 higher every month — 136% 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.
Rock Falls against Whiteside County and Illinois
| Measure | Rock Falls | Whiteside County |
|---|---|---|
| Median home value | $82,400 | $125,800 |
| Median property tax | $2,312 | $2,676 |
| Effective tax rate | 2.806% | 2.127% |
| Median gross rent | $745 | $808 |
| Population | 8,683 | 55,192 |
The weather behind that power bill
Rock Falls sits in Whiteside County, which averages a high of 83.1°F in its hottest month and a low of 12.0°F in its coldest, with 38.28" of precipitation a year and 36% of it in a single three-month stretch. That climate drives 705 cooling and 6,747 heating degree days, which is what sets the $214 electricity line above.
See the full climate breakdown for Whiteside County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Whiteside County
Full Whiteside County cost breakdown · Every county in Illinois
Common questions
How much does it cost to own a home in Rock Falls?
A $82,000 home in Rock Falls, Illinois costs approximately $996 per month with 20% down at 6.66%. That is $422 principal and interest, $192 property tax, $32 homeowners insurance, $282 utilities and $68 set aside for maintenance.
What is the property tax rate in Rock Falls?
Rock Falls has an effective property tax rate of 2.806%, based on a median home value of $82,400 and median real estate taxes of $2,312. That is higher than the Whiteside County average of 2.127%.
What is the average home price in Rock Falls?
The median owner-occupied home value in Rock Falls, Illinois is $82,400, against $125,800 across Whiteside County.
Is it cheaper to rent or buy in Rock Falls?
Median gross rent in Rock Falls is $745 a month, against $996 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 Rock Falls — 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.