ZIP 80305 vs ZIP 80303

This side-by-side compares ZIP 80305 (Boulder, CO) and ZIP 80303 (Boulder, CO) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 80305 has a population of 16,874 at 905 people per square mile, while ZIP 80303 has 22,361 at 392 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 80305 reports a median household income of $126,107 against $78,555 in ZIP 80303, with per-capita income of $74,287 vs $62,355. The share of adults holding a bachelor's degree or higher is 79.4% in 80305 and 80.1% in 80303. Poverty rate reads 12.2% vs 23.1%, and unemployment 4.6% vs 4.8% — 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 $1,032,900 in 80305 versus $961,900 in 80303, with median rent of $2,311 and $1,910 per month respectively. Homeownership rate is 60.2% vs 43.9%. 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.