ZIP 21046 vs ZIP 21045

This side-by-side compares ZIP 21046 (Columbia, MD) and ZIP 21045 (Columbia, MD) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 21046 has a population of 15,080 at 747 people per square mile, while ZIP 21045 has 38,288 at 1,523 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 21046 reports a median household income of $127,813 against $118,563 in ZIP 21045, with per-capita income of $61,404 vs $56,185. The share of adults holding a bachelor's degree or higher is 61.7% in 21046 and 56.6% in 21045. Poverty rate reads 8.4% vs 8.6%, and unemployment 2.6% vs 5.3% — 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 $479,500 in 21046 versus $453,700 in 21045, with median rent of $2,131 and $1,777 per month respectively. Homeownership rate is 65.1% vs 68.3%. 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.