ZIP 78665 vs ZIP 78664

This side-by-side compares ZIP 78665 (Round Rock, TX) and ZIP 78664 (Round Rock, TX) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 78665 has a population of 35,985 at 741 people per square mile, while ZIP 78664 has 52,932 at 1,233 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 78665 reports a median household income of $122,680 against $87,417 in ZIP 78664, with per-capita income of $56,191 vs $43,876. The share of adults holding a bachelor's degree or higher is 53.6% in 78665 and 36.4% in 78664. Poverty rate reads 4.7% vs 10.2%, and unemployment 3.4% vs 4.4% — 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 $474,100 in 78665 versus $358,200 in 78664, with median rent of $1,938 and $1,692 per month respectively. Homeownership rate is 61.4% vs 53.7%. 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.