ZIP 92870 vs ZIP 92831

This side-by-side compares ZIP 92870 (Placentia, CA) and ZIP 92831 (Fullerton, CA) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 92870 has a population of 52,033 at 2,964 people per square mile, while ZIP 92831 has 34,204 at 2,210 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 92870 reports a median household income of $115,929 against $89,278 in ZIP 92831, with per-capita income of $48,006 vs $48,337. The share of adults holding a bachelor's degree or higher is 44.2% in 92870 and 44.7% in 92831. Poverty rate reads 7.9% vs 15.7%, and unemployment 5.5% vs 6.9% — 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 $921,000 in 92870 versus $876,800 in 92831, with median rent of $2,388 and $2,146 per month respectively. Homeownership rate is 63.6% vs 41.0%. 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.