ZIP 91108 vs ZIP 91106

This side-by-side compares ZIP 91108 (San Marino, CA) and ZIP 91106 (Pasadena, CA) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 91108 has a population of 13,361 at 1,354 people per square mile, while ZIP 91106 has 24,229 at 3,176 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 91108 reports a median household income of $204,847 against $90,028 in ZIP 91106, with per-capita income of $101,946 vs $70,310. The share of adults holding a bachelor's degree or higher is 82.5% in 91108 and 61.6% in 91106. Poverty rate reads 6.6% vs 11.8%, and unemployment 5.3% vs 6.4% — 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 $2,000,001 in 91108 versus $1,040,400 in 91106, with median rent of $3,501 and $2,177 per month respectively. Homeownership rate is 82.0% vs 35.9%. 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.