ZIP 20634 vs ZIP 20620

This side-by-side compares ZIP 20634 (Great Mills, MD) and ZIP 20620 (Callaway, MD) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 20634 has a population of 5,927 at 333 people per square mile, while ZIP 20620 has 1,443 at 144 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 20634 reports a median household income of $139,375 against $165,972 in ZIP 20620, with per-capita income of $61,800 vs $57,323. The share of adults holding a bachelor's degree or higher is 40.3% in 20634 and 24.9% in 20620. Poverty rate reads 4.7% vs 4.9%, and unemployment 1.3% vs 0.0% — 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 $342,300 in 20634 versus $391,300 in 20620, with median rent of $1,814 and — per month respectively. Homeownership rate is 65.4% vs 96.4%. 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.