Total monthly cost of ownership
Cost to Own a Home in Plainfield, Illinois
A $398,000 home here costs
$3,588per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $2,046. The real number is $1,542 higher every month — 75% 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.
Plainfield against Will County and Illinois
| Measure | Plainfield | Will County |
|---|---|---|
| Median home value | $398,000 | $298,000 |
| Median property tax | $9,266 | $6,993 |
| Effective tax rate | 2.328% | 2.347% |
| Median gross rent | $1,889 | $1,413 |
| Population | 45,705 | 698,450 |
Plainfield extends across 2 counties. Figures here use Will County, where most of its housing sits.
The weather behind that power bill
Plainfield sits in Will County, which averages a high of 83.6°F in its hottest month and a low of 16.6°F in its coldest, with 38.03" of precipitation a year and 35% of it in a single three-month stretch. That climate drives 872 cooling and 6,171 heating degree days, which is what sets the $214 electricity line above.
See the full climate breakdown for Will County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Will County
Common questions
How much does it cost to own a home in Plainfield?
A $398,000 home in Plainfield, Illinois costs approximately $3,588 per month with 20% down at 6.66%. That is $2,046 principal and interest, $772 property tax, $156 homeowners insurance, $282 utilities and $332 set aside for maintenance.
What is the property tax rate in Plainfield?
Plainfield has an effective property tax rate of 2.328%, based on a median home value of $398,000 and median real estate taxes of $9,266. That is lower than the Will County average of 2.347%.
What is the average home price in Plainfield?
The median owner-occupied home value in Plainfield, Illinois is $398,000, against $298,000 across Will County.
Is it cheaper to rent or buy in Plainfield?
Median gross rent in Plainfield is $1,889 a month, against $3,588 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 Plainfield — 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.