ZIP 80109 vs ZIP 80108

This side-by-side compares ZIP 80109 (Castle Rock, CO) and ZIP 80108 (Castle Rock, CO) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 80109 has a population of 17,219 at 252 people per square mile, while ZIP 80108 has 22,612 at 246 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 80109 reports a median household income of $155,025 against $181,049 in ZIP 80108, with per-capita income of $62,169 vs $87,899. The share of adults holding a bachelor's degree or higher is 57.8% in 80109 and 65.5% in 80108. Poverty rate reads 3.3% vs 4.7%, and unemployment 6.2% vs 2.8% — 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 $675,500 in 80109 versus $881,700 in 80108, with median rent of $2,304 and $2,044 per month respectively. Homeownership rate is 81.4% vs 82.6%. 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.