ZIP Code 11783 — Seaford CDP, NY Demographics & Data

ZIP code 11783 covers Seaford, NY in Nassau County with a population of about 21,588.

At a glance, the area shows median age of 41.4 versus a U.S. median of about 38.9.

It sits in telephone area codes 363, 516; U.S. House district NY-4; the NEW YORK media market.

Seaford, NY ranks among higher-income / higher-home-value communities on US5 (very high median household income (~$164,128)). Searchers often dig into housing affordability stretch, private schools, and neighborhood comparisons rather than entry-level rentals.

Median household income in ZIP 11783 is about $164,128 — about 118% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 2.9%; unemployment rate near 4.8%; 45.8% of adults with a bachelor’s degree or higher (about 12.1 points above the national share (33.7%)).

Labor and commute patterns include leading industry context around Healthcare, Education, and Professional services; about 10.1% of workers reporting work-from-home (about 5.1 points below the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Median home value is about $626,700 — about 80% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $2,420 (about 108% above the U.S. median rent ($1,163)), and owner-occupancy near 93.3% (about 27.9 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 11783 in Seaford, NY, a household would need roughly $173,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $4,026. That is roughly in line with the local median household income ($164,128). Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

FEMA’s National Risk Index rates natural-hazard risk for Seaford CDP, NY as Relatively High (composite score 97.1), which is among the highest nationally. The strongest component scores on US5 are flood (98.2) and hurricane (95.4). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Seaford CDP, NY show little to no average snow and around 42.8 inches of annual precipitation.

IRS migration statistics show a net inflow of about 932 for ZIP 11783 (Seaford CDP, NY) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.