Zip Code 78634
Hutto, Texas — Williamson County
📍 ZIP code 78634 is in Hutto, Williamson County, Texas.
ZIP code 78634 is located in Hutto, Williamson County, Texas. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 43,466. The area code for ZIP code 78634 is 512.
Quick Answer
Zip code 78634 is in Hutto, Texas (Williamson County). It has a population of 43,466, median household income of $111,227, and median home value of $334,200.
Population
43,466
Income
$111,227
Home Value
$334,200
Climate
95°F / 37°F
About Zip Code 78634
Zip code 78634 is located in Hutto, Texas, within Williamson County. Home to approximately 43,466 residents, this area sits at an elevation of 664 ft and falls within the Central (CST/CDT) timezone. The local area code is 512.
The median household income is $111,227 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $334,200, and the cost of living index is 118 (18% above the national average of 100).
Summers average a high of 95°F while winters drop to 37°F. The area receives about 37 in of rain annually. The zip code covers 63.6 square miles of land area and 0.4 square miles of water.
Key Statistics
43,466
$111,227
$334,200
Central (CST/CDT)
512
664 ft
63.6 sq mi
35.6
15,322
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Compare With Nearby Zip Codes
| Metric | 78634 | 78664 | 78626 | 78660 | 76574 | 78681 |
|---|---|---|---|---|---|---|
| City | Hutto, TX | Round Rock, TX | Georgetown, TX | Pflugerville, TX | Taylor, TX | Round Rock, TX |
| Population | 43,466 | 62,272 | 45,020 | 118,437 | 19,746 | 58,531 |
| Median Income | $111,227 | $85,919 | $94,967 | $109,522 | $72,805 | $136,215 |
| Home Value | $334,200 | $317,400 | $358,500 | $369,300 | $252,000 | $460,000 |
| Cost of Living | 118 | 105 | 120 | 128 | 87 | 156 |
| Median Age | 35.6 | 34.8 | 33.8 | 35.6 | 41.8 | 39 |
Cost of Living
100 = National Average. Hutto's cost of living is 18% above the national average.
vs. State Avg
Above
Affordability
Moderate
Income-to-Home
3.0x
Demographics
Zip code 78634 has a population of 43,466 people with a median age of 35.6. There are 15,322 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Hutto (78634) population trend from 2010 to 2024
↓ -19.0%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
95°F
37°F
37 in
0 in
Hutto experiences hot summers with average highs around 95°F. Winters are mild with lows averaging 37°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$334,200
Median Household Income
$111,227
With 15,322 housing units across 63.6 square miles, 78634 has a housing density of 241 units per square mile. The home price-to-income ratio is 3.0x.
Location & Geography
Latitude
30.5606°
Longitude
-97.5463°
Land Area
63.6 sq mi
Water Area
0.4 sq mi
Nearby Zip Codes
Zip codes closest to 78634 (Hutto, TX) with distances:
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 78634's $111,227. A way to compare Hutto 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 78634 (Hutto, 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 Hutto, Texas?
Hutto, Texas uses zip code 78634.
What county is zip code 78634 in?
Zip code 78634 is located in Williamson County, Texas.
What is the population of zip code 78634?
The population of zip code 78634 is 43,466 with a median age of 35.6.
Is 78634 in Hutto, Texas?
Yes, zip code 78634 is in Hutto, Williamson County, Texas. The area code is 512.
Frequently Asked Questions
What city is zip code 78634 in?
Zip code 78634 is in Hutto, Texas. It is part of Williamson County and uses the Central (CST/CDT) timezone.
What is zip code 78634?
Zip code 78634 is a U.S. postal code in Hutto, Texas (Williamson County). It has a population of 43,466 and covers 63.6 square miles.
What is the population of zip code 78634?
The population of zip code 78634 (Hutto, TX) is 43,466 with a median age of 35.6. There are approximately 15,322 housing units in this area.
What is the median income in zip code 78634?
The median household income in zip code 78634 (Hutto, TX) is $111,227 per year. The cost of living index is 118 (100 = national average).
What is the average home price in zip code 78634?
The median home value in zip code 78634 (Hutto, TX) is $334,200. The cost of living index is 118 compared to the national average of 100.
What county is zip code 78634 in?
Zip code 78634 is located in Williamson County, Texas. The primary city is Hutto.
What is the area code for zip code 78634?
Zip code 78634 in Hutto, TX uses area code 512. It is located in the Central (CST/CDT) timezone.
Is zip code 78634 a good place to live?
Zip code 78634 (Hutto, TX) has a cost of living index of 118 (100 = national average), a median household income of $111,227, and median home values of $334,200. The median age is 35.6. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 78634?
The cost of living index for zip code 78634 (Hutto, TX) is 118, where 100 represents the national average. This area is above the national average. Median home value: $334,200.
What schools serve zip code 78634?
Zip code 78634 in Hutto, 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.