Zip Code 78717
Austin, Texas — Williamson County
📍 ZIP code 78717 is in Austin, Williamson County, Texas.
ZIP code 78717 is located in Austin, Williamson County, Texas. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 36,085. The area code for ZIP code 78717 is 512.
Quick Answer
Zip code 78717 is in Austin, Texas (Williamson County). It has a population of 36,085, median household income of $140,483, and median home value of $599,200.
Population
36,085
Income
$140,483
Home Value
$599,200
Climate
96°F / 38°F
About Zip Code 78717
Zip code 78717 is located in Austin, Texas, within Williamson County. Home to approximately 36,085 residents, this area sits at an elevation of 854 ft and falls within the Central (CST/CDT) timezone. The local area code is 512.
The median household income is $140,483 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $599,200, and the cost of living index is 187 (87% above the national average of 100).
Summers average a high of 96°F while winters drop to 38°F. The area receives about 37 in of rain and 3 in of snow annually. The zip code covers 12.8 square miles of land area and 0.1 square miles of water.
Key Statistics
36,085
$140,483
$599,200
Central (CST/CDT)
512
854 ft
12.8 sq mi
36.3
14,508
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Compare With Nearby Zip Codes
| Metric | 78717 | 78729 | 78681 | 78613 | 78728 | 78727 |
|---|---|---|---|---|---|---|
| City | Austin, TX | Austin, TX | Round Rock, TX | Cedar Park, TX | Austin, TX | Austin, TX |
| Population | 36,085 | 30,440 | 58,531 | 89,162 | 26,776 | 30,894 |
| Median Income | $140,483 | $81,589 | $136,215 | $120,829 | $74,048 | $107,194 |
| Home Value | $599,200 | $434,500 | $460,000 | $461,900 | $392,600 | $483,200 |
| Cost of Living | 187 | 124 | 156 | 151 | 113 | 145 |
| Median Age | 36.3 | 35.1 | 39 | 37.3 | 33.9 | 35 |
Cost of Living
100 = National Average. Austin's cost of living is 87% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
4.3x
Demographics
Zip code 78717 has a population of 36,085 people with a median age of 36.3. There are 14,508 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Austin (78717) population trend from 2010 to 2024
↑ 10.0%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
96°F
38°F
37 in
3 in
Austin experiences hot summers with average highs around 96°F. Winters are mild with lows averaging 38°F. The area receives about 3 in of snow per year.
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Housing & Economy
Median Home Value
$599,200
Median Household Income
$140,483
With 14,508 housing units across 12.8 square miles, 78717 has a housing density of 1,133 units per square mile. The home price-to-income ratio is 4.3x.
Location & Geography
Latitude
30.4895°
Longitude
-97.7538°
Land Area
12.8 sq mi
Water Area
0.1 sq mi
Nearby Zip Codes
Zip codes closest to 78717 (Austin, TX) with distances:
All Zip Codes in Austin, TX
Other zip codes serving Austin:
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 78717's $140,483. A way to compare Austin 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 78717 (Austin, 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 Austin, Texas?
Austin, Texas uses zip code 78717 along with 7 other zip codes.
What county is zip code 78717 in?
Zip code 78717 is located in Williamson County, Texas.
What is the population of zip code 78717?
The population of zip code 78717 is 36,085 with a median age of 36.3.
Is 78717 in Austin, Texas?
Yes, zip code 78717 is in Austin, Williamson County, Texas. The area code is 512.
Frequently Asked Questions
What city is zip code 78717 in?
Zip code 78717 is in Austin, Texas. It is part of Williamson County and uses the Central (CST/CDT) timezone.
What is zip code 78717?
Zip code 78717 is a U.S. postal code in Austin, Texas (Williamson County). It has a population of 36,085 and covers 12.8 square miles.
What is the population of zip code 78717?
The population of zip code 78717 (Austin, TX) is 36,085 with a median age of 36.3. There are approximately 14,508 housing units in this area.
What is the median income in zip code 78717?
The median household income in zip code 78717 (Austin, TX) is $140,483 per year. The cost of living index is 187 (100 = national average).
What is the average home price in zip code 78717?
The median home value in zip code 78717 (Austin, TX) is $599,200. The cost of living index is 187 compared to the national average of 100.
What county is zip code 78717 in?
Zip code 78717 is located in Williamson County, Texas. The primary city is Austin.
What is the area code for zip code 78717?
Zip code 78717 in Austin, TX uses area code 512. It is located in the Central (CST/CDT) timezone.
Is zip code 78717 a good place to live?
Zip code 78717 (Austin, TX) has a cost of living index of 187 (100 = national average), a median household income of $140,483, and median home values of $599,200. The median age is 36.3. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 78717?
The cost of living index for zip code 78717 (Austin, TX) is 187, where 100 represents the national average. This area is above the national average. Median home value: $599,200.
What schools serve zip code 78717?
Zip code 78717 in Austin, Texas is served by the local school district of Williamson 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.