Total monthly cost of ownership
Cost to Own a Home in St. George Island, Florida
A $629,000 home here costs
$4,918per month, all in, with 20% down at today's 7.24% 30-year fixed rate. By the 28% rule that takes a household income of about $211,000 a year.
A standard mortgage calculator would have told you $3,429. The real number is $1,489 higher every month, 43% more than the payment most buyers budget for.
Compare Franklin County with anywhere in America · full county breakdown
Small-place caveat: the Census publishes these figures for St. George Island from a five-year rolling sample, and with about 1,218 residents that sample is small. The median home value here carries a much wider margin of error than a big-city figure does, so treat it as indicative rather than exact. The Franklin County figures are drawn from a far larger sample if you want a steadier number.
Where every dollar goes
Only the first line is a mortgage payment. Change any assumption above and every figure below recalculates.
St. George Island against Franklin County and Florida
| Measure | St. George Island | Franklin County |
|---|---|---|
| Median home value | $628,500 | $254,300 |
| Median property tax | $4,208 | $1,572 |
| Effective tax rate | 0.670% | 0.618% |
| Median gross rent | — | $1,044 |
| Population | 1,218 | 12,418 |
The weather behind that power bill
St. George Island sits in Franklin County, which averages a high of 89.7°F in its hottest month and a low of 44.4°F in its coldest, with 53.08" of precipitation a year and 37% of it in a single three-month stretch. That climate drives 2,738 cooling and 1,224 heating degree days, which is what sets the $165 electricity line above.
See the full climate breakdown for Franklin County , month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Franklin County
Full Franklin County cost breakdown · Every county in Florida
Talk to someone who works this market
These are St. George Island averages. What one specific house costs to own, or what it would sell for today, depends on the street and the condition of the place. We will connect you with one licensed local agent who works St. George Island every week. Free, no obligation, and we never sell your details to a list.
I'm looking to buy in St. George Island I already own here and may sell
Common questions
How much does it cost to own a home in St. George Island?
A $629,000 home in St. George Island, Florida costs approximately $4,918 per month with 20% down at 7.24%. That is $3,429 principal and interest, $351 property tax, $380 homeowners insurance, $233 utilities and $524 set aside for maintenance.
What is the property tax rate in St. George Island?
St. George Island has an effective property tax rate of 0.670%, based on a median home value of $628,500 and median real estate taxes of $4,208. That is higher than the Franklin County average of 0.618%.
What is the average home price in St. George Island?
The median owner-occupied home value in St. George Island, Florida is $628,500, against $254,300 across Franklin County.
Is it cheaper to rent or buy in St. George Island?
Rent data is not published for St. George Island at this level of detail.
What salary do you need to buy a home in St. George Island?
Using the standard 28% rule, housing costs at no more than 28% of gross income, buying the median home in St. George Island, Florida at today's rate takes a household income of roughly $211,000 a year. That covers the full $4,918 monthly cost, not just the mortgage payment.
Sources & methodology
- Median home value, real estate taxes, gross rent and population for St. George Island, US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance, NAIC average premium for Florida.
- 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.