ZIP 20853 vs ZIP 20851

This side-by-side compares ZIP 20853 (Rockville, MD) and ZIP 20851 (Rockville, MD) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 20853 has a population of 29,673 at 1,267 people per square mile, while ZIP 20851 has 14,191 at 2,316 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 20853 reports a median household income of $159,080 against $126,411 in ZIP 20851, with per-capita income of $56,310 vs $51,567. The share of adults holding a bachelor's degree or higher is 50.2% in 20853 and 46.2% in 20851. Poverty rate reads 7.2% vs 9.1%, and unemployment 4.9% vs 3.0% — 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 $631,900 in 20853 versus $568,900 in 20851, with median rent of $1,861 and $2,043 per month respectively. Homeownership rate is 86.0% vs 57.5%. 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.