Cost to Own
United StatesNew YorkSuffolk CountyRonkonkoma Population 18,368 Data vintage ACS 2023 5-Year Rates updated 2026-07-30

Total monthly cost of ownership

Cost to Own a Home in Ronkonkoma, New York

A $468,000 home here costs

$4,070

per month, all in — with 20% down at today's 6.66% 30-year fixed rate.

A standard mortgage calculator would have told you $2,406. The real number is $1,664 higher every month — 69% more than the payment most buyers budget for.

Ronkonkoma median: $467,600
Under 20% adds PMI
Freddie Mac PMMS
US average household

Where every dollar goes

Only the first line is a mortgage payment. Change any assumption above and every figure below recalculates.

Principal & interest30-year fixed, $374,400 borrowed $2,406
Property tax2.139% effective rate for Ronkonkoma itself $834
Homeowners insuranceNew York averages $1,455/yr (NAIC), or 0.264% of home value $103
Electricity29.93¢/kWh — New York residential average, EIA $269
Water, sewer & trashUS household average $68
Maintenance reserve1% of home value per year $390
Total monthly $4,070

Ronkonkoma against Suffolk County and New York

MeasureRonkonkomaSuffolk County
Median home value$467,600$539,500
Median property tax$10,001$10,001
Effective tax rate2.139%1.854%
Median gross rent$2,275$2,190
Population18,3681,525,680

The weather behind that power bill

Ronkonkoma sits in Suffolk County, which averages a high of 83.9°F in its hottest month and a low of 26.0°F in its coldest, with 47.22" of precipitation a year and 27% of it in a single three-month stretch. That climate drives 945 cooling and 4,906 heating degree days, which is what sets the $269 electricity line above.

See the full climate breakdown for Suffolk County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.

Other cities in Suffolk County

Full Suffolk County cost breakdown · Every county in New York

Common questions

How much does it cost to own a home in Ronkonkoma?

A $468,000 home in Ronkonkoma, New York costs approximately $4,070 per month with 20% down at 6.66%. That is $2,406 principal and interest, $834 property tax, $103 homeowners insurance, $337 utilities and $390 set aside for maintenance.

What is the property tax rate in Ronkonkoma?

Ronkonkoma has an effective property tax rate of 2.139%, based on a median home value of $467,600 and median real estate taxes of $10,001. That is higher than the Suffolk County average of 1.854%.

What is the average home price in Ronkonkoma?

The median owner-occupied home value in Ronkonkoma, New York is $467,600, against $539,500 across Suffolk County.

Is it cheaper to rent or buy in Ronkonkoma?

Median gross rent in Ronkonkoma is $2,275 a month, against $4,070 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 Ronkonkoma — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
  • Homeowners insurance — NAIC average premium for New York.
  • 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.

Full methodology