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Advertise here →Sea Cliff, NY · Market Data
Sea Cliff, New York real estate market data.
Real estate market data for Sea Cliff, NY (Nassau County) — Census median home value $926,500, county listing prices up about 6.7% over the past year.
Sea Cliff, NY is in Nassau County, New York — covering the whole local market here: resale homes, condos, land, and new construction. The most recent Census estimate puts the population at 5,037, with a median household income of $185,650. Census data puts Sea Cliff's median home value at $926,500 (all owner-occupied homes); Nassau County's current median listing price runs $959,250, up about 6.7% over the past year.
At a glance
Sea Cliff market snapshot
Population
5,037
Median Household Income
$185,650
Median Home Value (city)
$926,500
Median Listing Price (Nassau County)
$959,250
Median Gross Rent
$2,268/mo
Price Trend (YoY)
+6.7%
Market data compiled from public sources; deemed reliable but not guaranteed; verify independently. Full source list ↗
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What makes Sea Cliff different
Home Value, By Source
The Census Bureau's American Community Survey (2023 5-year estimate) puts Sea Cliff's median home value — across all owner-occupied homes, not just recent sales — at $926,500. Separately, Nassau County's current median listing price (via Realtor.com data, 2026-06-01) runs $959,250. These cover different geography (city vs. county) and different measures (assessed value vs. active listings), which is why we show both rather than picking one — full source list on our data sources page.
County Price Trend
Nassau County's FHFA house price index shows a 6.97% annual change in 2025.
Population & Income
Sea Cliff has an estimated population of 5,037 and a median household income of $185,650, per the Census Bureau's American Community Survey (2023 5-year estimate).
Affordability Snapshot
Sea Cliff's Census-reported median home value works out to about 5.0x the area's median household income, and median gross rent runs roughly 15% of that same income on an annualized basis. Housing economists commonly flag a price-to-income ratio above 4x as historically elevated -- useful context, not a personal affordability verdict.
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Common questions
Sea Cliff FAQ
What are home values like in Sea Cliff, NY?
The Census Bureau's American Community Survey puts Sea Cliff's median home value at $926,500. Nassau County's current median listing price runs $959,250, up about 6.7% over the past year.
What is the population of Sea Cliff, NY?
The U.S. Census Bureau's American Community Survey (2023 5-year estimate) puts Sea Cliff's population at approximately 5,037.
What's the median rent in Sea Cliff, NY?
The Census ACS estimates median gross rent in Sea Cliff at approximately $2,268 per month.
What is the median household income in Sea Cliff, NY?
Census ACS data puts the median household income in Sea Cliff at approximately $185,650.
Is the Sea Cliff housing market growing?
Nassau County's FHFA house price index shows a 6.97% annual change in 2025.
Is Sea Cliff, NY affordable relative to income?
Census ACS data puts Sea Cliff's median home value at about 5.0 times the median household income, with median gross rent equal to roughly 15% of that income annually. This is a general benchmark, not a personal pre-qualification -- your own income, debt, and down payment determine what you can actually afford.
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