ZIP 92121 vs ZIP 92130

This side-by-side compares ZIP 92121 (San Diego, CA) and ZIP 92130 (San Diego, CA) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 92121 has a population of 4,179 at 132 people per square mile, while ZIP 92130 has 48,940 at 1,025 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 92121 reports a median household income of $135,938 against $205,680 in ZIP 92130, with per-capita income of $67,816 vs $97,985. The share of adults holding a bachelor's degree or higher is 74.4% in 92121 and 81.9% in 92130. Poverty rate reads 15.8% vs 4.6%, and unemployment 4.6% vs 3.9% — 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 $1,085,200 in 92121 versus $1,748,100 in 92130, with median rent of $2,606 and $3,430 per month respectively. Homeownership rate is 49.6% vs 62.0%. 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.