78634 ZIP Code — Hutto, TX
Williamson County, Texas
ZIP code 78634 is located in Hutto, Texas, within Williamson County. It covers approximately 56.39 square miles and serves a population of 41,099 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 512/737.
About ZIP code 78634
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $289,800. Owner-occupancy is high at 81%, well above the national average.
Median household income is $105,023.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 29 minutes is near the national average.
Educational attainment is near the national average, with 34% of residents holding a bachelor's degree or higher.
41,099
population
56.39
sq mi land
Standard
ZIP type
Central (CT)
timezone
78634 ZIP code map
Cities in ZIP code 78634
Below are the cities the US Postal Service accepts for ZIP code 78634. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Hutto | Acceptable |
| Hutto | Preferred |
Nearby ZIP codes
78665 Round Rock (5.7 mi)
78664 Round Rock (6 mi)
78682 Round Rock (7.5 mi)
78626 Georgetown (7.6 mi)
78660 Pflugerville (8.3 mi)
76574 Taylor (10 mi)
78681 Round Rock (10.7 mi)
78681 Round Rock (10.7 mi)
78728 Austin (11.2 mi)
78615 Coupland (11.9 mi)
76530 Granger (13 mi)
78727 Austin (13.4 mi)
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 41,099 |
| Population density | 729 / sq mi |
| State FIPS | 48 |
| County FIPS | 491 |
| Geography | |
|---|---|
| Land area | 56.39 sq mi |
| Water area | 0.37 sq mi |
| Latitude | 30.5551 |
| Longitude | -97.5520 |
| Timezone | Central (CT) |
| Area code | 512/737 |
Total population by age
Gender
Race & ethnicity
Economics
updated 06/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 20.8% | 23.0% | 39.5% |
| $50k – $100k | 38.0% | 30.5% | 30.1% |
| $100k – $200k | 35.6% | 34.7% | 22.6% |
| Over $200k | 5.6% | 11.8% | 7.8% |
Demographics & statistics
41,099
Population
729
People per sq mi
36.5
Median age
$105,023
Median household income
$39,739
Per capita income
$289,800
Median home value
$1,821
Median monthly rent
81.2%
Home ownership
7.5%
Poverty rate
5.3%
Unemployment
11,842
Housing units
33.9%
Bachelor's or higher
Age distribution
Male
Female
1,376
Under 5
1,354
1,428
5–9
1,406
1,321
10–14
1,300
1,723
15–19
1,695
1,175
20–24
1,156
2,809
25–34
2,765
4,131
35–44
4,065
3,096
45–54
3,048
952
55–59
937
1,192
60–64
1,173
1,119
65–74
1,102
338
75–84
333
53
85+
52
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 10,402 | 25.3% |
| 18 and over | 30,697 | 74.7% |
| 65 and over | 2,997 | 7.3% |
| Median age | 36.5 years | |
Race & ethnicity
White
55.7%
Hispanic or Latino
15.5%
Two or more races
14.1%
Black or African American
7.7%
Other race
5.2%
Asian
1.2%
American Indian / Alaska Native
0.4%
Native Hawaiian / Pacific Islander
0.2%
| Group | Count | % |
|---|---|---|
| White | 27,090 | 55.7% |
| Hispanic or Latino | 7,551 | 15.5% |
| Two or more races | 6,848 | 14.1% |
| Black or African American | 3,764 | 7.7% |
| Other race | 2,551 | 5.2% |
| Asian | 565 | 1.2% |
| American Indian / Alaska Native | 193 | 0.4% |
| Native Hawaiian / Pacific Islander | 88 | 0.2% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 20.8% | 23.0% | 39.5% |
| $50k – $100k | 38.0% | 30.5% | 30.1% |
| $100k – $200k | 35.6% | 34.7% | 22.6% |
| Over $200k | 5.6% | 11.8% | 7.8% |
Under $10k
1.5%
$10k–$15k
0.9%
$15k–$25k
2.9%
$25k–$35k
2.4%
$35k–$50k
6.3%
$50k–$75k
15.8%
$75k–$100k
15.8%
$100k–$150k
32.1%
$150k–$200k
12.8%
$200k+
9.4%
| Range | % of households |
|---|---|
| Under $10k | 1.5% |
| $10k–$15k | 0.9% |
| $15k–$25k | 2.9% |
| $25k–$35k | 2.4% |
| $35k–$50k | 6.3% |
| $50k–$75k | 15.8% |
| $75k–$100k | 15.8% |
| $100k–$150k | 32.1% |
| $150k–$200k | 12.8% |
| $200k+ | 9.4% |
| Median income | $105,023 |
Housing
Home values
Under $50k
2.6%
$50k–$100k
0.1%
$100k–$150k
1.3%
$150k–$200k
6.0%
$200k–$300k
44.7%
$300k–$500k
33.5%
$500k–$1M
9.5%
$1M+
2.3%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $289,800 |
| Median rent / month | $1,821 |
| Owner occupied | 81.2% |
| Renter occupied | 18.8% |
| Vacant | 2.8% |
| Single-family detached | 87.3% |
| Large apartment buildings | 3.5% |
| Mobile homes | 3.6% |
| Median rooms | 6.1 |
| Avg household size (owned) | 2.91 |
Year built
| Era | % |
|---|---|
| 2020 or later | 4.6% |
| 2010–2019 | 28.3% |
| 2000–2009 | 50.7% |
| 1990–1999 | 5.2% |
| 1980–1989 | 6.9% |
| 1970–1979 | 2.3% |
| 1960–1969 | 0.3% |
| 1950–1959 | 0.0% |
| 1940–1949 | 0.1% |
| 1939 or earlier | 1.6% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.4% |
| 1 bedroom | 4.4% |
| 2 bedrooms | 7.7% |
| 3 bedrooms | 51.8% |
| 4 bedrooms | 30.1% |
| 5+ bedrooms | 5.6% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 0.7% |
| 1 vehicle | 19.7% |
| 2 vehicles | 47.8% |
| 3 or more | 31.8% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 32.9% |
| Electricity | 60.7% |
| Propane / LP gas | 4.3% |
| Fuel oil | 0.2% |
| Solar | 0.5% |
| No fuel used | 1.3% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 8,322 | 59.1% |
| Cohabiting couple | 1,667 | 11.8% |
| Male householder, no spouse | 1,830 | 13.0% |
| Female householder, no spouse | 2,258 | 16.0% |
| Households with children under 18 | 6,249 | 44.4% |
| Households with seniors (65+) | 2,289 | 16.3% |
| Average household size | 2.92 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 31.9% | 26.9% |
| Married | 55.2% | 55.0% |
| Separated | 2.0% | 1.4% |
| Widowed | 0.9% | 4.3% |
| Divorced | 9.9% | 12.4% |
Education
Less than 9th grade
3.1%
Some HS, no diploma
2.9%
HS graduate
27.8%
Some college, no degree
24.1%
Associate's degree
8.3%
Bachelor's degree
25.3%
Graduate / professional
8.6%
| Metric | % |
|---|---|
| HS diploma or higher | 94.0% |
| Bachelor's or higher | 33.9% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 729 | 6.4% |
| Kindergarten | 669 | 5.9% |
| Elementary school | 4,523 | 39.6% |
| High school | 2,443 | 21.4% |
| College / grad school | 3,045 | 26.7% |
Employment
Industry of employment
Education & healthcare
18.2%
Professional & management
14.0%
Retail trade
12.1%
Finance & real estate
10.2%
Manufacturing
9.4%
Construction
8.6%
Arts, food & hospitality
7.8%
Public administration
6.3%
Other services
5.2%
Transportation & utilities
4.4%
Information
2.0%
Wholesale trade
1.6%
Agriculture & mining
0.2%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 42.4% |
| Service | 12.5% |
| Sales & office | 26.6% |
| Natural resources & construction | 8.4% |
| Production & transportation | 10.1% |
Employment type
| Type | % |
|---|---|
| Private sector | 79.9% |
| Government | 15.3% |
| Self-employed | 4.8% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 73.5% |
| Carpool | 7.4% |
| Public transit | 0.0% |
| Walk | 1.1% |
| Work from home | 15.4% |
| Other means | 2.5% |
| Avg commute (minutes) | 28.6 |
Poverty
All people
7.5%
Under 18 years
10.2%
18 and over
6.7%
Married-couple families
2.8%
Female-led households
15.1%
Income support
| Source | % of households |
|---|---|
| Social Security | 16.7% |
| Retirement income | 17.3% |
| Supplemental Security | 2.5% |
| Cash public assistance | 1.1% |
| Food stamps / SNAP | 5.3% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 33.0% |
| High blood pressure | 24.9% |
| High cholesterol | 27.9% |
| Diabetes | 7.4% |
| Heart disease | 3.3% |
| Stroke | 1.7% |
| Asthma | 8.8% |
| Arthritis | 16.3% |
| Kidney disease | 1.8% |
| Pulmonary disease | 3.9% |
| Cancer | 3.7% |
| Behavior / access | % |
|---|---|
| Smoking | 15.6% |
| Binge drinking | 23.0% |
| No physical activity | 19.3% |
| Less than 7 hrs sleep | 33.5% |
| Depression | 22.3% |
| Fair or poor health | 11.6% |
| Poor mental health | 15.4% |
| Poor physical health | 8.2% |
| No health insurance | 25.0% |
| Visited doctor (checkup) | 66.8% |
| Visited dentist | 60.3% |
| Cholesterol screening | 87.7% |
| Teeth loss | 10.6% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 2,645 | 8.6% |
| Disability | % |
|---|---|
| Any disability | 9.4% |
| Under 18 | 2.3% |
| 18–64 years | 9.2% |
| 65 and over | 35.7% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 76.9% |
| Public insurance | 17.9% |
| No insurance | 11.3% |
| Uninsured under 19 | 5.9% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 38,369 | 93.4% |
| Spanish | 3,168 | 8.3% |
| Other Indo-European | 2,899 | 7.6% |
| Asian & Pacific Islander | 55 | 0.1% |
| Other languages | 95 | 0.2% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 36,012 | 87.6% |
| Born in same state | 35,267 | 85.8% |
| Born in different state | 22,536 | 54.8% |
| Foreign born | 745 | 1.8% |
| Naturalized citizen | 5,087 | 12.4% |
| Not a US citizen | 2,847 | 56.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 3,388 | 8.2% |
| French | 2,616 | 6.4% |
| Arab | 1,433 | 3.5% |
| Polish | 623 | 1.5% |
| Dutch | 220 | 0.5% |
| Ancestry | Count | % |
|---|---|---|
| English | 195 | 0.5% |
| Norwegian | 47 | 0.1% |
| German | 40 | 0.1% |
| Irish | 28 | 0.1% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 34.3% |
| Internet access | 96.7% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 78634
What city is ZIP code 78634 in?
ZIP code 78634 is primarily assigned to Hutto, Texas.
What county is ZIP code 78634 in?
ZIP code 78634 falls within Williamson County, Texas.
Is ZIP code 78634 mostly owner-occupied?
81% of occupied units in ZIP code 78634 are owner-occupied, well above the national average.
What is the median household income in ZIP code 78634?
The median household income in ZIP code 78634 is $105,023, above the national median of ~$75,000.
What is the population of ZIP code 78634?
ZIP code 78634 has an estimated population of 41,099 residents, with a density of 729 people per square mile.
What is the typical home value in ZIP code 78634?
The median home value in ZIP code 78634 is $289,800.
What timezone is ZIP code 78634 in?
ZIP code 78634 observes the CST timezone.