Total monthly cost of ownership
Cost to Own a Home in Rosemont, Illinois
A $404,000 home here costs
$3,551per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $2,077. The real number is $1,474 higher every month — 71% 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.
Rosemont against Cook County and Illinois
| Measure | Rosemont | Cook County |
|---|---|---|
| Median home value | $403,600 | $305,200 |
| Median property tax | $8,350 | $6,053 |
| Effective tax rate | 2.069% | 1.983% |
| Median gross rent | $1,099 | $1,381 |
| Population | 4,145 | 5,185,812 |
The weather behind that power bill
Rosemont sits in Cook County, which averages a high of 84.0°F in its hottest month and a low of 16.1°F in its coldest, with 33.23" of precipitation a year and 35% of it in a single three-month stretch. That climate drives 822 cooling and 6,364 heating degree days, which is what sets the $214 electricity line above.
See the full climate breakdown for Cook County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Cook County
Common questions
How much does it cost to own a home in Rosemont?
A $404,000 home in Rosemont, Illinois costs approximately $3,551 per month with 20% down at 6.66%. That is $2,077 principal and interest, $697 property tax, $158 homeowners insurance, $282 utilities and $337 set aside for maintenance.
What is the property tax rate in Rosemont?
Rosemont has an effective property tax rate of 2.069%, based on a median home value of $403,600 and median real estate taxes of $8,350. That is higher than the Cook County average of 1.983%.
What is the average home price in Rosemont?
The median owner-occupied home value in Rosemont, Illinois is $403,600, against $305,200 across Cook County.
Is it cheaper to rent or buy in Rosemont?
Median gross rent in Rosemont is $1,099 a month, against $3,551 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 Rosemont — 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.