ZIP 51103 vs ZIP 51104

This side-by-side compares ZIP 51103 (Sioux City, IA) and ZIP 51104 (Sioux City, IA) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 51103 has a population of 17,453 at 639 people per square mile, while ZIP 51104 has 22,104 at 1,099 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 51103 reports a median household income of $58,197 against $75,362 in ZIP 51104, with per-capita income of $27,717 vs $36,752. The share of adults holding a bachelor's degree or higher is 18.0% in 51103 and 28.9% in 51104. Poverty rate reads 21.0% vs 10.4%, and unemployment 3.4% 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 $142,900 in 51103 versus $211,100 in 51104, with median rent of $906 and $998 per month respectively. Homeownership rate is 65.6% vs 64.5%. 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.