ZIP 91733 vs ZIP 91731

This side-by-side compares ZIP 91733 (South El Monte, CA) and ZIP 91731 (El Monte, CA) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 91733 has a population of 43,896 at 2,538 people per square mile, while ZIP 91731 has 29,591 at 2,995 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 91733 reports a median household income of $68,278 against $62,215 in ZIP 91731, with per-capita income of $23,590 vs $24,216. The share of adults holding a bachelor's degree or higher is 11.7% in 91733 and 15.2% in 91731. Poverty rate reads 19.3% vs 17.8%, and unemployment 7.8% vs 6.2% — 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 $621,800 in 91733 versus $635,600 in 91731, with median rent of $1,681 and $1,669 per month respectively. Homeownership rate is 41.7% vs 39.6%. 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.