Zip Code 78738
Lakeway, Texas — Travis County
📍 ZIP code 78738 is in Lakeway, Travis County, Texas.
ZIP code 78738 is located in Lakeway, Travis County, Texas. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 28,790. The area code for ZIP code 78738 is 512.
Quick Answer
Zip code 78738 is in Lakeway, Texas (Travis County). It has a population of 28,790, median household income of $169,911, and median home value of $754,600.
Population
28,790
Income
$169,911
Home Value
$754,600
Climate
94°F / 39°F
About Zip Code 78738
Zip code 78738 is located in Lakeway, Texas, within Travis County. Home to approximately 28,790 residents, this area sits at an elevation of 1009 ft and falls within the Central (CST/CDT) timezone. The local area code is 512.
The median household income is $169,911 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $754,600, and the cost of living index is 233 (133% above the national average of 100).
Summers average a high of 94°F while winters drop to 39°F. The area receives about 36 in of rain annually. The zip code covers 17 square miles of land area and 0.1 square miles of water.
Key Statistics
28,790
$169,911
$754,600
Central (CST/CDT)
512
1009 ft
17 sq mi
43.4
11,907
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Compare With Nearby Zip Codes
| Metric | 78738 | 78734 | 78736 | 78733 | 78732 | 78735 |
|---|---|---|---|---|---|---|
| City | Lakeway, TX | Lakeway, TX | Austin, TX | Lakeway, TX | Lakeway, TX | Austin, TX |
| Population | 28,790 | 22,091 | 9,849 | 9,339 | 20,646 | 20,112 |
| Median Income | $169,911 | $129,116 | $100,761 | $220,421 | $194,120 | $126,216 |
| Home Value | $754,600 | $626,100 | $556,400 | $964,100 | $728,500 | $791,900 |
| Cost of Living | 233 | 189 | 157 | 250 | 243 | 222 |
| Median Age | 43.4 | 50.8 | 42.3 | 43.7 | 37.7 | 37.7 |
Cost of Living
100 = National Average. Lakeway's cost of living is 133% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
4.4x
Demographics
Zip code 78738 has a population of 28,790 people with a median age of 43.4. There are 11,907 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Lakeway (78738) population trend from 2010 to 2024
↑ 4.4%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
94°F
39°F
36 in
0 in
Lakeway experiences hot summers with average highs around 94°F. Winters are mild with lows averaging 39°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$754,600
Median Household Income
$169,911
With 11,907 housing units across 17 square miles, 78738 has a housing density of 700 units per square mile. The home price-to-income ratio is 4.4x.
Location & Geography
Latitude
30.3201°
Longitude
-97.9582°
Land Area
17 sq mi
Water Area
0.1 sq mi
Nearby Zip Codes
Zip codes closest to 78738 (Lakeway, TX) with distances:
All Zip Codes in Lakeway, TX
Other zip codes serving Lakeway:
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 78738's $169,911. A way to compare Lakeway to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 78738 (Lakeway, TX). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Lakeway, Texas?
Lakeway, Texas uses zip code 78738 along with 3 other zip codes.
What county is zip code 78738 in?
Zip code 78738 is located in Travis County, Texas.
What is the population of zip code 78738?
The population of zip code 78738 is 28,790 with a median age of 43.4.
Is 78738 in Lakeway, Texas?
Yes, zip code 78738 is in Lakeway, Travis County, Texas. The area code is 512.
Frequently Asked Questions
What city is zip code 78738 in?
Zip code 78738 is in Lakeway, Texas. It is part of Travis County and uses the Central (CST/CDT) timezone.
What is zip code 78738?
Zip code 78738 is a U.S. postal code in Lakeway, Texas (Travis County). It has a population of 28,790 and covers 17 square miles.
What is the population of zip code 78738?
The population of zip code 78738 (Lakeway, TX) is 28,790 with a median age of 43.4. There are approximately 11,907 housing units in this area.
What is the median income in zip code 78738?
The median household income in zip code 78738 (Lakeway, TX) is $169,911 per year. The cost of living index is 233 (100 = national average).
What is the average home price in zip code 78738?
The median home value in zip code 78738 (Lakeway, TX) is $754,600. The cost of living index is 233 compared to the national average of 100.
What county is zip code 78738 in?
Zip code 78738 is located in Travis County, Texas. The primary city is Lakeway.
What is the area code for zip code 78738?
Zip code 78738 in Lakeway, TX uses area code 512. It is located in the Central (CST/CDT) timezone.
Is zip code 78738 a good place to live?
Zip code 78738 (Lakeway, TX) has a cost of living index of 233 (100 = national average), a median household income of $169,911, and median home values of $754,600. The median age is 43.4. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 78738?
The cost of living index for zip code 78738 (Lakeway, TX) is 233, where 100 represents the national average. This area is above the national average. Median home value: $754,600.
What schools serve zip code 78738?
Zip code 78738 in Lakeway, Texas is served by the local school district of Travis County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.