How much do homeowners pay a month in West Islip, NY?

Name: Homeowner costs in West Islip, NY, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Homeowners with a mortgage in West Islip, NY pay a median of $3,521 (±$112) a month in selected owner costs (2020–2024 American Community Survey).

Owners without a mortgage pay $1,500 or more.

68.5% of owned homes carry a mortgage.

In West Islip, the median monthly cost with a mortgage went from $3,099 in 2015–2019 to $3,521 in 2020–2024 (+13.6%).

Prices (CPI-U) rose 22.7% over the same years, so it rose more slowly than prices: a measurable decrease after inflation.

Figures last updated on November 12, 2026.

With a mortgage: $3,521 (±$112)
Without a mortgage: $1,500 or more
Owned with a mortgage: 68.5%

Monthly owner costs in West Islip

Median selected monthly owner costs, estimate (90% margin of error)
	West Islip	Suffolk County	New York	United States
With a mortgage	$3,521 (±$112)	$3,320 (±$17)	$2,555 (±$9)	$1,963
Without a mortgage	$1,500 or more	$1,478 (±$15)	$958 (±$5)	$638
Owned homes with a mortgage	68.5% (±3.5 points)	62.4% (±0.6 points)	57.8% (±0.2 points)	60.6%
Median real estate taxes (a year)	$10,000 or more	$10,000 or more	$6,582 (±$21)	$3,119

Selected monthly owner costs are the mortgage payment, property taxes, insurance, utilities, fuels and any condominium or mobile-home fees.

In West Islip, the median cost with a mortgage is higher than in Suffolk County ($3,320).

It is also higher than in New York ($2,555).

It is higher than the national figure ($1,963).

In Suffolk County, West Islip ranks 47 of 112 places with a published estimate, from highest to lowest median monthly cost with a mortgage.

Statewide, it ranks 123 of 404.

Rankings use the estimates alone; where margins of error overlap, neighboring ranks may not truly differ.

How owner costs in West Islip have changed since 2015–2019

2015–2019 and 2020–2024 American Community Survey 5-year estimates
	2015–2019	2020–2024	Amount of change	Verdict
Median owner cost with a mortgage	$3,099 (±$71)	$3,521 (±$112)	+13.6%	Down after inflation
Median home value	$426,700 (±$7,931)	$614,300 (±$14,318)	+44.0%	Up after inflation

The Census Bureau publishes 2015–2019 dollars in 2019 dollars and 2020–2024 dollars in 2024 dollars.

Prices (the CPI-U, US Bureau of Labor Statistics) rose 22.7% between 2019 and 2024, so a dollar figure’s verdict compares the two after raising the earlier one by that much, using the Census Bureau’s test for a difference.

The two periods do not overlap, as the Census Bureau recommends for 5-year estimates.

Median monthly cost with a mortgage in places near West Islip

Nearest places with a published estimate, compared with West Islip
Place	Distance	Median monthly cost with a mortgage	Compared with this place
West Islip	—	$3,521 (±$112)	—
Village of Babylon	1.7 mi	$3,810 (±$176)	Higher
West Bay Shore	1.9 mi	$3,348 (±$260)	Not measurably different
Village of Brightwaters	2.0 mi	$4,000 or more	—
North Babylon	2.5 mi	$3,000 (±$123)	Lower
Bay Shore	3.0 mi	$3,265 (±$155)	Lower
West Babylon	3.4 mi	$3,219 (±$116)	Lower
Baywood	3.5 mi	$2,896 (±$134)	Lower
Village of Lindenhurst	4.2 mi	$3,148 (±$131)	Lower

Nearby places with a measurably lower figure: North Babylon, NY ($3,000), Bay Shore, NY ($3,265), West Babylon, NY ($3,219).

Nearby places with a measurably higher figure: Village of Babylon, NY ($3,810).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Median monthly cost with a mortgage across Suffolk County, place by place

Rank	Place	Median monthly cost with a mortgage
41	Sayville	$3,611 (±$147)
42	East Islip	$3,582 (±$169)
43	Westhampton	$3,573 (±$259)
44	Springs	$3,561 (±$333)
45	Orient	$3,537 (±$1,640)
46	Hauppauge	$3,530 (±$123)
47	West Islip	$3,521 (±$112)
48	Baiting Hollow	$3,505 (±$347)
49	Wheatley Heights	$3,497 (±$185)
50	East Quogue	$3,496 (±$362)
51	West Sayville	$3,484 (±$465)
52	Center Moriches	$3,469 (±$262)
53	Blue Point	$3,433 (±$475)

Showing 13 of 112 places in Suffolk County, ranked from highest to lowest.

West Islip is a census-designated place: an unincorporated community the Census Bureau draws for statistics, with no municipal government of its own.

It lies inside the Town of Islip, whose figures include it.

Survey years: 2020–2024 (American Community Survey 5-year estimates), compared with 2015–2019.

Margins of error are at the 90% confidence level.

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Questions about West Islip

What is the average mortgage payment in West Islip?

The Census Bureau publishes total owner costs rather than the mortgage alone: the median for owners with a mortgage in West Islip, NY is $3,521 (±$112) a month, including taxes, insurance and utilities.

How much does it cost to own a paid-off home in West Islip?

Owners without a mortgage in West Islip pay a median of $1,500 or more a month in taxes, insurance, utilities and fees.

Has the cost of owning a home in West Islip gone up?

In West Islip, the median monthly cost with a mortgage went from $3,099 in 2015–2019 to $3,521 in 2020–2024 (+13.6%).

Prices (CPI-U) rose 22.7% over the same years, so it rose more slowly than prices: a measurable decrease after inflation.

Sources

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) and detailed tables (acs/acs5) for West Islip CDP, New York (place:80302, in state:36).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The 2015–2019 figures are B25088_002E, B25088_002M, B25103_001E, B25103_001M, B25077_001E, B25077_001M from the 2019 release.

The API needs a free key.

Request a Census API key.

DP04_0101E, DP04_0101M, DP04_0109E, DP04_0109M, DP04_0091PE, DP04_0091PM, B25103_001E, B25103_001M

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.