ZIP 21144 vs ZIP 21077

This side-by-side compares ZIP 21144 (Severn, MD) and ZIP 21077 (Harmans, MD) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 21144 has a population of 31,884 at 768 people per square mile, while ZIP 21077 has 224 at 132 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 21144 reports a median household income of $136,684 against — in ZIP 21077, with per-capita income of $57,707 vs $48,338. The share of adults holding a bachelor's degree or higher is 43.5% in 21144 and 44.4% in 21077. Poverty rate reads 4.4% vs 0.0%, and unemployment 3.9% vs 30.9% — 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 $483,700 in 21144 versus — in 21077, with median rent of $2,026 and — per month respectively. Homeownership rate is 80.3% vs 77.1%. 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.