The typical owner-occupied home in Central Islip is worth about $436,400, 3% above the New York median of $423,800 and 31% above the national median of $332,700. Owners pay a median $9,148 a year in property taxes, about 2.10% of their home's value, higher than the New York rate of 1.55%. The median household earns $113,707 a year, so the median home costs 3.8 times the median income (4.9 times for New York). 78% of occupied homes here are lived in by their owners, and 72% of those owners still have a mortgage.
Central Islip at a glance
| Central Islip | New York | U.S. | |
|---|---|---|---|
| Median home value | $436,400 | $423,800 | $332,700 |
| Median property tax paid per year | $9,148 | $6,582 | $3,119 |
| Property tax as a share of value | 2.10% | 1.55% | 0.94% |
| Median household income | $113,707 | $85,974 | $80,734 |
| Homes lived in by their owners | 78% | 54% | 65% |
| Owner homes with a mortgage | 72% | 58% | 61% |
| Median monthly costs, owners with a mortgage | $2,873 | $2,555 | $1,963 |
| Those costs as a share of the owners' income | 25.0% | 22.5% | 21.0% |
| Median rent | $2,071 | $1,621 | $1,413 |
| Rent as a share of renters' income | 40.6% | 31.2% | 30.6% |
| Median year homes were built | 1969 | 1959 | 1980 |
| Vacant homes | 10.5% | 10.0% | 10.1% |
| Population | 38,373 | 19,852,366 | 334,922,499 |
What a typical home costs per month in Central Islip
At this week's average 30-year rate of 7.11%, buying the median Central Islip home of $436,400 with 20% down costs about $3,294 a month, including property taxes and insurance. With an FHA loan and 3.5% down, it's about $4,021, because the loan is bigger and FHA adds mortgage insurance.
Lenders usually want housing costs under about 28% of gross income, which means an income of roughly $141,175 for the 20%-down payment. That payment is 35% of the median Central Islip household income of $113,707; at that income and 20% down, the 28% guideline points to a home of about $351,000.
The median rent here is $2,071 a month, so owning the median home costs about $1,223 a month more than renting, before you count the equity you build and any tax benefits.
| Down payment | $87,280 |
|---|---|
| Loan amount | $349,120 |
| Principal and interest | $2,349 |
| Property taxes (2.10% a year) | $764 |
| Homeowners insurance (our estimate, 0.5% a year) | $182 |
| PMI | $0 |
| Total per month | $3,294 |
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| Down payment | $15,274 |
|---|---|
| Loan amount | $428,496 |
| Principal and interest | $2,883 |
| Property taxes (2.10% a year) | $764 |
| Homeowners insurance (our estimate, 0.5% a year) | $182 |
| FHA mortgage insurance | $193 |
| Total per month | $4,021 |
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Questions about home buying in Central Islip
What is the median home value in Central Islip?
About $436,400 for owner-occupied homes, according to the Census Bureau's 2020–2024 American Community Survey.
How much are property taxes in Central Islip?
Homeowners pay a median $9,148 a year, which is about 2.10% of the median home value. Your bill depends on your home's assessed value and local rates.
What income do you need to buy a home in Central Islip?
For the median home with 20% down at 7.11%, the payment is about $3,294 a month. Keeping that under 28% of gross income takes about $141,175 a year.
More about Central Islip
- Mortgage Refinance in Central Islip
- Debt Relief in Central Islip
- Home Equity Loans in Central Islip
- Guides and quotes for mortgage refinance on our sister site, MortgageRefinance.com
Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates; Freddie Mac Primary Mortgage Market Survey, week of November 12, 2026. Estimates for small places have wide margins of error. About our data