ZIP Code 78731 Map
Census ZIP Code Tabulation Area 78731 in Austin, TX (Travis County). ZCTA boundaries closely approximate USPS delivery areas.
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ZIP 78731 Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
27,507
Households
14,343
Median household income
$105,494
Median age
42.3 years
Median home value
$903,200
Median gross rent
$1,737/mo
Owner-occupied homes
53.1%
Bachelor's degree or higher
78.3%
Below poverty level
6%
Land area
8.7 sq mi
Population density
3,145 / sq mi