Total monthly cost of ownership
Cost to Own a Home in St. Helens, Oregon
A $351,000 home here costs
$2,587per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $1,804. The real number is $783 higher every month — 43% 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. Helens against Columbia County and Oregon
| Measure | St. Helens | Columbia County |
|---|---|---|
| Median home value | $350,900 | $390,600 |
| Median property tax | $2,704 | $2,948 |
| Effective tax rate | 0.771% | 0.755% |
| Median gross rent | $1,269 | $1,221 |
| Population | 14,152 | 53,178 |
The weather behind that power bill
St. Helens sits in Columbia County, which averages a high of 78.2°F in its hottest month and a low of 30.9°F in its coldest, with 48.03" of precipitation a year and 48% of it in a single three-month stretch. That climate drives 84 cooling and 5,772 heating degree days, which is what sets the $146 electricity line above.
See the full climate breakdown for Columbia County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Columbia County
Full Columbia County cost breakdown · Every county in Oregon
Common questions
How much does it cost to own a home in St. Helens?
A $351,000 home in St. Helens, Oregon costs approximately $2,587 per month with 20% down at 6.66%. That is $1,804 principal and interest, $226 property tax, $51 homeowners insurance, $214 utilities and $293 set aside for maintenance.
What is the property tax rate in St. Helens?
St. Helens has an effective property tax rate of 0.771%, based on a median home value of $350,900 and median real estate taxes of $2,704. That is higher than the Columbia County average of 0.755%.
What is the average home price in St. Helens?
The median owner-occupied home value in St. Helens, Oregon is $350,900, against $390,600 across Columbia County.
Is it cheaper to rent or buy in St. Helens?
Median gross rent in St. Helens is $1,269 a month, against $2,587 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. Helens — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance — NAIC average premium for Oregon.
- 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.