ZIP 00631 vs ZIP 00601

This side-by-side compares ZIP 00631 (Castaner, PR) and ZIP 00601 (Adjuntas, PR) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 00631 has a population of 1,852 at 178 people per square mile, while ZIP 00601 has 18,570 at 111 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 00631 reports a median household income of $19,278 against $19,454 in ZIP 00601, with per-capita income of $9,431 vs $10,223. The share of adults holding a bachelor's degree or higher is 32.1% in 00631 and 18.2% in 00601. Poverty rate reads 54.5% vs 59.9%, and unemployment 21.7% vs 20.5% — 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 $99,800 in 00631 versus $94,200 in 00601, with median rent of $336 and $427 per month respectively. Homeownership rate is 65.1% vs 67.5%. 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.