Total monthly cost of ownership
Cost to Own a Home in St. Marys, Ohio
A $139,000 home here costs
$1,253per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $715. The real number is $538 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.
St. Marys against Auglaize County and Ohio
| Measure | St. Marys | Auglaize County |
|---|---|---|
| Median home value | $138,500 | $182,000 |
| Median property tax | $1,520 | $1,756 |
| Effective tax rate | 1.097% | 0.965% |
| Median gross rent | $835 | $853 |
| Population | 8,319 | 46,209 |
The weather behind that power bill
St. Marys sits in Auglaize County, which averages a high of 83.6°F in its hottest month and a low of 20.1°F in its coldest, with 35.77" of precipitation a year and 32% of it in a single three-month stretch. That climate drives 847 cooling and 5,769 heating degree days, which is what sets the $175 electricity line above.
See the full climate breakdown for Auglaize County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Auglaize County
Common questions
How much does it cost to own a home in St. Marys?
A $139,000 home in St. Marys, Ohio costs approximately $1,253 per month with 20% down at 6.66%. That is $715 principal and interest, $127 property tax, $52 homeowners insurance, $243 utilities and $116 set aside for maintenance.
What is the property tax rate in St. Marys?
St. Marys has an effective property tax rate of 1.097%, based on a median home value of $138,500 and median real estate taxes of $1,520. That is higher than the Auglaize County average of 0.965%.
What is the average home price in St. Marys?
The median owner-occupied home value in St. Marys, Ohio is $138,500, against $182,000 across Auglaize County.
Is it cheaper to rent or buy in St. Marys?
Median gross rent in St. Marys is $835 a month, against $1,253 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 St. Marys — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance — NAIC average premium for Ohio.
- 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.