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Zip Code 78738 — Austin, TX

78738 is a ZIP Code associated with Austin, TX, located within Travis. The postal region supports an estimated population of 31,019 residents across Data Pending housing units, with a population density of 284.5 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (30.306680, -97.990020)

Data Metric	Local Statistic
Postal / Zip Code	78738
Primary City	Austin
State / Province	TX
County	Travis
Total Population	31,019
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	284.5 people/sq mi
Timezone	America/Chicago

How 78738 Compares

Metric	ZIP 78738	Travis County	TX State Average
Population	31,019	1,401,963	30,188,035
Median Income	Data Pending	N/A	N/A
Population Density	284.5 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 78736	Austin	4.7 mi	9,651	N/A
Zip 78734	Austin	5.7 mi	22,145	N/A
Zip 78733	Austin	6.8 mi	9,029	N/A
Zip 78732	Austin	7.7 mi	21,087	N/A
Zip 78735	Austin	7.8 mi	20,996	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →