Total monthly cost of ownership
Cost to Own a Home in Cobb Island, Maryland
A $246,000 home here costs
$2,090per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $1,265. The real number is $825 higher every month — 65% 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.
Cobb Island against Charles County and Maryland
| Measure | Cobb Island | Charles County |
|---|---|---|
| Median home value | $246,100 | $402,300 |
| Median property tax | $3,541 | $4,179 |
| Effective tax rate | 1.439% | 1.039% |
| Median gross rent | — | $1,897 |
| Population | 1,162 | 168,710 |
The weather behind that power bill
Cobb Island sits in Charles County, which averages a high of 88.0°F in its hottest month and a low of 28.3°F in its coldest, with 41.03" of precipitation a year and 30% of it in a single three-month stretch. That climate drives 1,512 cooling and 4,002 heating degree days, which is what sets the $196 electricity line above.
See the full climate breakdown for Charles County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Charles County
Full Charles County cost breakdown · Every county in Maryland
Common questions
How much does it cost to own a home in Cobb Island?
A $246,000 home in Cobb Island, Maryland costs approximately $2,090 per month with 20% down at 6.66%. That is $1,265 principal and interest, $295 property tax, $62 homeowners insurance, $264 utilities and $205 set aside for maintenance.
What is the property tax rate in Cobb Island?
Cobb Island has an effective property tax rate of 1.439%, based on a median home value of $246,100 and median real estate taxes of $3,541. That is higher than the Charles County average of 1.039%.
What is the average home price in Cobb Island?
The median owner-occupied home value in Cobb Island, Maryland is $246,100, against $402,300 across Charles County.
Is it cheaper to rent or buy in Cobb Island?
Rent data is not published for Cobb Island at this level of detail.
Sources & methodology
- Median home value, real estate taxes, gross rent and population for Cobb Island — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance — NAIC average premium for Maryland.
- 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.