ZIP 11740 vs ZIP 11721

This side-by-side compares ZIP 11740 (Greenlawn, NY) and ZIP 11721 (Centerport, NY) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 11740 has a population of 9,454 at 984 people per square mile, while ZIP 11721 has 6,292 at 976 per square mile. That difference in population size and density alone reshapes how every other metric should be interpreted — a higher-income ZIP with 1,200 residents behaves very differently from one with 45,000.

On income and education, ZIP 11740 reports a median household income of $152,386 against $197,179 in ZIP 11721, with per-capita income of $64,810 vs $109,501. The share of adults holding a bachelor's degree or higher is 54.2% in 11740 and 71.4% in 11721. Poverty rate reads 6.9% vs 4.1%, and unemployment 2.6% vs 6.5% — these four fields alone drive most of the difference in the scorecard grades you will see for each ZIP.

Housing separates these two ZIPs further: median home value sits at $693,700 in 11740 versus $740,300 in 11721, with median rent of $684 and $3,501 per month respectively. Homeownership rate is 81.8% vs 96.6%. When reading the comparison table below, focus on paired metrics rather than single winners — a ZIP with lower home values and lower income is not strictly "worse" if rent-to-income ratios and commute times land in the same zone. Every value is pulled from the exact same ACS table so the two columns are genuinely comparable.