ZIP Code 78681 Map
Census ZIP Code Tabulation Area 78681 in Round Rock, TX (Williamson County). ZCTA boundaries closely approximate USPS delivery areas.
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ZIP 78681 Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
56,691
Households
20,135
Median household income
$137,819
Median age
39.3 years
Median home value
$497,300
Median gross rent
$1,963/mo
Owner-occupied homes
73.9%
Bachelor's degree or higher
58%
Below poverty level
5.5%
Land area
23.2 sq mi
Population density
2,445 / sq mi