Total monthly cost of ownership
Cost to Own a Home in Rainier, Oregon
A $310,000 home here costs
$2,362per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $1,594. The real number is $768 higher every month — 48% 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.
Rainier against Columbia County and Oregon
| Measure | Rainier | Columbia County |
|---|---|---|
| Median home value | $310,200 | $390,600 |
| Median property tax | $3,009 | $2,948 |
| Effective tax rate | 0.970% | 0.755% |
| Median gross rent | $866 | $1,221 |
| Population | 1,859 | 53,178 |
The weather behind that power bill
Rainier 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 Rainier?
A $310,000 home in Rainier, Oregon costs approximately $2,362 per month with 20% down at 6.66%. That is $1,594 principal and interest, $251 property tax, $45 homeowners insurance, $214 utilities and $258 set aside for maintenance.
What is the property tax rate in Rainier?
Rainier has an effective property tax rate of 0.970%, based on a median home value of $310,200 and median real estate taxes of $3,009. That is higher than the Columbia County average of 0.755%.
What is the average home price in Rainier?
The median owner-occupied home value in Rainier, Oregon is $310,200, against $390,600 across Columbia County.
Is it cheaper to rent or buy in Rainier?
Median gross rent in Rainier is $866 a month, against $2,362 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 Rainier — 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.