ZIP 78657 vs ZIP 78663

Source:

Horseshoe Bay, TX — Round Mountain, TX

This side-by-side compares ZIP 78657 (Horseshoe Bay, TX) and ZIP 78663 (Round Mountain, TX) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 78657 has a population of 5,509 at 54 people per square mile, while ZIP 78663 has 746 at 2 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 78657 reports a median household income of $91,452 against $168,125 in ZIP 78663, with per-capita income of $68,540 vs $100,059. The share of adults holding a bachelor's degree or higher is 42.9% in 78657 and 42.7% in 78663. Poverty rate reads 4.9% vs 3.6%, and unemployment 2.3% vs 0.4% — 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 $483,200 in 78657 versus $356,800 in 78663, with median rent of $1,492 and $1,688 per month respectively. Homeownership rate is 81.3% vs 83.0%. 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.

Compare different ZIP codes:

vs
Metric
78657
Horseshoe Bay, TX
78663
Round Mountain, TX
Population 5,509 746
Median Household Income $91,452 $168,125
Per Capita Income $68,540 $100,059
Median Age 59.3 65.4
Bachelor's Degree or Higher 42.9% 42.7%
Poverty Rate 4.9% 3.6%
Unemployment Rate 2.3% 0.4%
Median Home Value $483,200 $356,800
Median Rent (monthly) $1,492 $1,688
Homeownership Rate 81.3% 83.0%
Population Density (per sq mi) 54 2

Values highlighted in green indicate the better metric where applicable. Source: U.S. Census Bureau ACS 2023.

Full Profile
78657
Horseshoe Bay, TX
View full ZIP profile →
Full Profile
78663
Round Mountain, TX
View full ZIP profile →

What are common questions about this comparison?

How do ZIP codes 78657 and 78663 compare?
ZIP 78657 (Horseshoe Bay, TX) has a population of 5,509 and a median household income of $91,452. ZIP 78663 (Round Mountain, TX) has a population of 746 and a median household income of $168,125.
Which ZIP code has higher income, 78657 or 78663?
ZIP 78663 (Round Mountain, TX) has a higher median household income of $168,125 compared to $91,452 for ZIP 78657.
How do I compare two ZIP codes on PlainZIP?
Visit plainzip.com/compare, enter two 5-digit U.S. ZIP codes, and click Compare. You can also navigate directly to /compare/XXXXX-vs-YYYYY to share a specific comparison.

All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.

Data sourced from official U.S. Census ACS and HUD-USPS ZIP crosswalk data. See our methodology for details. Retrieved and formatted by PlainZIP Editorial.