ZIP 63121 vs ZIP 63133

This side-by-side compares ZIP 63121 (Saint Louis, MO) and ZIP 63133 (Saint Louis, MO) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 63121 has a population of 26,602 at 1,431 people per square mile, while ZIP 63133 has 8,161 at 1,055 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 63121 reports a median household income of $42,701 against $39,293 in ZIP 63133, with per-capita income of $27,628 vs $22,968. The share of adults holding a bachelor's degree or higher is 24.2% in 63121 and 13.8% in 63133. Poverty rate reads 25.6% vs 31.2%, and unemployment 12.3% vs 10.6% — 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 $95,600 in 63121 versus $65,100 in 63133, with median rent of $985 and $1,017 per month respectively. Homeownership rate is 51.6% vs 47.5%. 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.