What is the population of Seaford CDP?

Seaford CDP has 15,884 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #122 of 1,292 in New York.

What is the median household income in Seaford CDP?

Median household income in Seaford CDP is $156,488 a year, 99.3% above the national figure of $78,538.

How much does it cost to rent or buy in Seaford CDP?

Median gross rent is $2,612 a month and the median home value is $631,000, so rent absorbs about 20% of median household income.

Is Seaford CDP affordable compared with the rest of the US?

Homes cost about 4× the local median income here versus roughly 3.9× nationally, so Seaford CDP is less affordable to buy in than the typical US market, and rent takes 20% of median income against the 30% cost-burden line.

Aerial view of a dense city center, illustrating the US cities ZIP code directory

New York · Census place 66058

Seaford, NY population, income and ZIP codes

Quick answer

The population of the city of Seaford, New York (Seaford, NY — Census place “Seaford CDP”) is 15,884 residents, ranking #122 of 1292 places in New York. Median household income is $156,488, the median home is worth $631,000 and median gross rent runs $2,612 a month. Looking for the Seaford New York ZIP code list? 1 ZIP codes serve Seaford, NY: 11783.

Population: 15,884Seaford CDP residents
Median household income: $156,488Past 12 months, inflation adjusted
Median home value: $631,000Owner-occupied units
Median gross rent: $2,612Rent plus utilities, monthly
Median age: 40.4 yrsAll residents
Homeownership rate: 93.4%Owner-occupied households

Seaford ZIP codes (New York)

Census ZCTAs whose delivery area overlaps Seaford.

The Seaford NY ZIP code list below covers 1 ZIP code. Open any one for its population, income, housing and rent profile.

11783

What the numbers mean in Seaford CDP

Housing cost measured against local earnings.

A household earning the Seaford CDP median would spend about 20% of gross income on the median rent. The 30% mark is the federal threshold for cost burden, so anything above it signals a stretched rental market. The median home costs 4.0× the median household income; nationally that ratio sits near 4.5×. Poverty affects 3.1% of residents and 93.4% of households own their home.

Source: US Census Bureau, ACS 2019-2023 5-year estimates · rates as published for 2019-2023 ACS 5-year

Seaford CDP, NY in context

How this area compares with national benchmarks.

Seaford CDP is a mid-size town in New York, with 15,884 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #122 of 1,292 ranked by population — larger than 90% of them. The median age here is 40.4 years against 39.1 nationally, a slightly older profile than the country as a whole. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in Seaford CDP earn a median of $156,488 a year, 99.3% above the national figure of $78,538 and 70% above the $91,806 median for the 847 New York cities we cover. Household income here is measured before tax and pooled across everyone at the address, which is why it reads higher than typical individual earnings in the same area. Poverty reaches 3.1% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Seaford CDP is valued at $631,000, 108% above the national figure and 100% above the $315,800 peer median, while median gross rent runs $2,612 a month, 85.8% above the national figure, or roughly $31,344 across a full year. A household on the local median income would put about 20% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 4×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 93.4% of occupied homes are owner-occupied versus 65% nationally, an owner-dominated market where rental listings are scarce and rent medians rest on a thin sample. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

All values below were released by the Census for this exact geography, with no gap-filling on our side. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.

Compare with nearby places

Places of similar size in New York.

More New York coverage.

Frequently asked questions

Common questions about this area.

What is the population of Seaford CDP?: Seaford CDP has 15,884 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #122 of 1,292 in New York.
What is the median household income in Seaford CDP?: Median household income in Seaford CDP is $156,488 a year, 99.3% above the national figure of $78,538.
How much does it cost to rent or buy in Seaford CDP?: Median gross rent is $2,612 a month and the median home value is $631,000, so rent absorbs about 20% of median household income.
Is Seaford CDP affordable compared with the rest of the US?: Homes cost about 4× the local median income here versus roughly 3.9× nationally, so Seaford CDP is less affordable to buy in than the typical US market, and rent takes 20% of median income against the 30% cost-burden line.
How current is this Seaford CDP data?: All figures come from the US Census Bureau American Community Survey 2019-2023 ACS 5-year five-year estimates. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.