ZIP 90631 vs ZIP 90603

This side-by-side compares ZIP 90631 (La Habra, CA) and ZIP 90603 (Whittier, CA) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 90631 has a population of 67,619 at 1,879 people per square mile, while ZIP 90603 has 20,063 at 2,369 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 90631 reports a median household income of $104,251 against $136,705 in ZIP 90603, with per-capita income of $46,885 vs $50,125. The share of adults holding a bachelor's degree or higher is 34.2% in 90631 and 34.2% in 90603. Poverty rate reads 10.3% vs 3.5%, and unemployment 6.8% vs 4.6% — 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 $818,500 in 90631 versus $859,000 in 90603, with median rent of $2,121 and $2,344 per month respectively. Homeownership rate is 61.5% vs 78.5%. 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.