Sea Cliff, New York Demographics & Population 2026
During the 2020–2024 ACS period, Sea Cliff, New York had a total population of 5,033, the 353rd largest village in New York, with a median household income of $193,590, which is 125% higher than the state average. The poverty rate is 0.9%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 125% above the state average — one of the wealthiest communities in New York.
- An exceptionally low poverty rate of 0.9% — among the lowest in New York.
- Unemployment rate of 13.5% is notably above the national average.
Sea Cliff Quick Facts
How Sea Cliff Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 5,037 | 5,033 | -0.1% |
| Median household income | $185,650 | $193,590 | +4.3% |
| Median home value | $926,500 | $986,900 | +6.5% |
How Sea Cliff Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 65 | National average: 61
Education
Educational Attainment (Adults 25+)
Sea Cliff Rankings in New York
Explore New York Rankings
Other Cities in Nassau County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Hempstead | 58,801 | $90,420 | 14.4% | $459,500 |
| Levittown | 51,904 | $146,068 | 4.7% | $590,500 |
| Freeport | 44,088 | $120,625 | 7.4% | $505,900 |
| Hicksville | 43,780 | $144,471 | 3.9% | $634,100 |
| Valley Stream | 40,315 | $133,190 | 5.5% | $616,100 |
| East Meadow | 36,821 | $133,971 | 6.4% | $631,800 |
| Elmont | 36,518 | $114,217 | 5.0% | $602,900 |
| Baldwin | 34,994 | $145,472 | 6.6% | $593,800 |
| Long Beach | 34,756 | $140,739 | 7.6% | $696,400 |
| Uniondale | 33,148 | $124,684 | 9.2% | $539,000 |
Cities Similar to Sea Cliff
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| West Hills | 5,369 | $185,745 | $741,900 | 66.3% | 3.9% |
| Searingtown | 4,720 | $212,344 | $1,100,700 | 70.8% | 3.0% |
| Ardsley | 4,998 | $243,000 | $829,900 | 78.7% | 4.4% |
| West Sayville | 4,800 | $166,312 | $583,200 | 41.5% | 2.8% |
| Blauvelt | 5,406 | $174,255 | $644,600 | 55.5% | 6.6% |
Population Overview
Sea Cliff is a small city located in New York, within Nassau County. The total population is 5,033. It ranks as the 353rd most populous out of 1,289 Census-designated places in New York.
Age Demographics
The median age in Sea Cliff is 40.5 years. This is 2% higher than the state median of 39.8 years.
Economy, Income & Housing
The median household income in Sea Cliff is $193,590. This is 125% higher than the state median of $85,974. It is also 140% higher than the national median of $80,734. The poverty rate stands at 0.9%. This is 93% lower than the state poverty rate of 14.0%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 13.5%. This is 112% higher than the state rate of 6.4%. The median home value is $986,900. Housing costs are 133% higher than the state median of $423,800. The home-value-to-income ratio is 5.1x. 77.3% of occupied housing units are owner-occupied. This homeownership rate is 42% higher than the state average of 54.4%.
Race & Ethnicity
The largest racial or ethnic group in Sea Cliff is White (non-Hispanic), making up 82.8% of the population. Hispanic or Latino residents account for 11.1%. The White (non-Hispanic) population is significantly higher than the state average (82.8% vs 52.8%). The Black or African American population (1.1%) is well below the state average of 13.4%. The Asian population (0.6%) is well below the state average of 9.0%.
Education
61.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 52% higher than the state rate of 40.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 97.2%. Notably, 34.8% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Sea Cliff, New York is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against New York state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,289 Census-designated places in New York. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Sea Cliff, New York?
Sea Cliff, New York has a population of 5,033 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Sea Cliff, NY?
The median household income in Sea Cliff is $193,590, which is 140% higher than the national median of $80,734.
What is the poverty rate in Sea Cliff, NY?
The poverty rate in Sea Cliff is 0.9%. This means approximately 47 residents live below the federal poverty line.
What is the racial makeup of Sea Cliff, New York?
Sea Cliff's population is 82.8% White, 1.1% Black, 11.1% Hispanic/Latino, and 0.6% Asian.
What is the median home value in Sea Cliff, NY?
The median home value in Sea Cliff is $986,900. The home-value-to-income ratio is 5.1x.
How educated is Sea Cliff, New York?
61.3% of adults (25+) in Sea Cliff hold a bachelor's degree or higher, and 34.8% hold a graduate or professional degree.