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Texas ZIP Codes
Williamson County
Coupland, TX
78615
78615 ZIP Code — Coupland, TX
Williamson County, Texas
ZIP code 78615 is located in
Coupland ,
Texas ,
within Williamson County .
It covers approximately 54.51 square miles and serves a population of
1,781 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 512/737 .
About ZIP code 78615
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 $265,700. Owner-occupancy is high at 75%, well above the national average.
Median household income is $73,462. The poverty rate of 5% is below the national average. SNAP benefit usage at 18% of households reflects economic stress in the area. 38% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. An above-average commute of 38 minutes suggests many residents work outside the immediate area.
Educational attainment is near the national average, with 24% of residents holding a bachelor's degree or higher.
Overall, ZIP code 78615 reflects a community defined by high homeownership, a significant Social Security-dependent population, and elevated reliance on food assistance.
78615 ZIP code map
View map of 78615
Cities in ZIP code 78615
Below are the cities the US Postal Service accepts for ZIP code 78615. Using any city not on this list may result in mail delivery delays.
Nearby ZIP codes
Demographics
updated 07/2026
Population
Total population
1,781
Population density
33 / sq mi
State FIPS
48
County FIPS
491
Geography
Land area
54.51 sq mi
Water area
0.43 sq mi
Latitude
30.4698
Longitude
-97.3787
Timezone
Central (CT)
Area code
512/737
Economics
updated 07/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
29.0%
23.0%
39.5%
$50k – $100k
40.2%
30.5%
30.1%
$100k – $200k
21.8%
34.7%
22.6%
Over $200k
9.0%
11.8%
7.8%
Demographics & statistics
$73,462
Median household income
$265,700
Median home value
$1,065
Median monthly rent
23.7%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 666 37.4% 18 and over 1,115 62.6% 65 and over 321 18.0% Median age 30.3 years
Race & ethnicity
American Indian / Alaska Native
9.8%
Group Count % White 967 42.1% Hispanic or Latino 516 22.5% Two or more races 448 19.5% American Indian / Alaska Native 226 9.8% Other race 92 4% Asian 48 2.1%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
29.0%
23.0%
39.5%
$50k – $100k
40.2%
30.5%
30.1%
$100k – $200k
21.8%
34.7%
22.6%
Over $200k
9.0%
11.8%
7.8%
Range % of households Under $10k 8.5% $10k–$15k 0.8% $15k–$25k 4.0% $25k–$35k 1.7% $35k–$50k 7.8% $50k–$75k 28.8% $75k–$100k 7.6% $100k–$150k 17.2% $150k–$200k 16.7% $200k+ 7.0% Median income $73,462
Housing
Housing overview
Metric Value Median home value $265,700 Median rent / month $1,065 Owner occupied 75.2% Renter occupied 24.8% Vacant 5.9% Single-family detached 74.7% Large apartment buildings 1.6% Mobile homes 18.9% Median rooms 6.0 Avg household size (owned) 3.32
Year built
Era % 2020 or later 2.0% 2010–2019 15.2% 2000–2009 36.5% 1990–1999 3.6% 1980–1989 16.0% 1970–1979 6.2% 1960–1969 8.4% 1950–1959 5.2% 1940–1949 2.3% 1939 or earlier 4.6%
Bedrooms
Size % of units No bedroom (studio) 1.4% 1 bedroom 3.2% 2 bedrooms 14.4% 3 bedrooms 58.5% 4 bedrooms 18.4% 5+ bedrooms 4.1%
Vehicles per household
Vehicles % of households No vehicle 0.8% 1 vehicle 15.2% 2 vehicles 34.3% 3 or more 49.8%
Heating fuel
Fuel type % Electricity 72.0% Propane / LP gas 27.7% Wood 0.4%
Households & families
Household type Count % Married-couple family 352 66.7% Cohabiting couple 37 7.0% Male householder, no spouse 66 12.5% Female householder, no spouse 73 13.8% Households with children under 18 239 45.3% Households with seniors (65+) 222 42.0% Average household size 3.37
Marital status
Status Male Female Never married 30.0% 16.5% Married 64.5% 67.3% Separated 0.0% 0.4% Widowed 0.0% 4.6% Divorced 5.5% 11.2%
Education
Some college, no degree
21.2%
Graduate / professional
11.6%
Metric % HS diploma or higher 87.1% Bachelor's or higher 23.7%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 41 8.5% Kindergarten 39 8.0% Elementary school 324 66.8% High school 35 7.2% College / grad school 46 9.5%
Employment
Industry of employment
Education & healthcare
17.1%
Arts, food & hospitality
12.7%
Professional & management
12.0%
Public administration
9.3%
Transportation & utilities
7.4%
Finance & real estate
5.7%
Occupation
Category % Management, business & arts 29.7% Service 18.6% Sales & office 21.6% Natural resources & construction 16.2% Production & transportation 13.8%
Employment type
Type % Private sector 68.3% Government 20.3% Self-employed 11.4% Unpaid family workers 0.0%
Commute
Method % Drive alone 70.4% Carpool 21.2% Public transit 0.0% Walk 0.0% Work from home 8.2% Other means 0.1% Avg commute (minutes) 37.7
Poverty
Married-couple families
0.0%
Female-led households
0.0%
Income support
Source % of households Social Security 38.3% Retirement income 27.8% Supplemental Security 2.7% Cash public assistance 0.0% Food stamps / SNAP 18.4%
Health indicators
Condition % Obesity 32.0% High blood pressure 34.1% High cholesterol 38.0% Diabetes 11.2% Heart disease 6.9% Stroke 3.1% Asthma 8.8% Arthritis 25.7% Kidney disease 3.0% Pulmonary disease 6.9% Cancer 6.9%
Behavior / access % Smoking 15.9% Binge drinking 18.6% No physical activity 22.1% Less than 7 hrs sleep 31.0% Depression 22.4% Fair or poor health 15.3% Poor mental health 14.1% Poor physical health 11.0% No health insurance 21.9% Visited doctor (checkup) 71.7% Visited dentist 60.4% Cholesterol screening 91.0% Teeth loss 12.8%
Veterans & disability
Veterans Count % Civilian veterans 109 9.8%
Disability % Any disability 14.6% Under 18 7.5% 18–64 years 12.0% 65 and over 35.8%
Health insurance coverage
Type % Private insurance 52.8% Public insurance 52.5% No insurance 11.3% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 1,533 86.1% Spanish 119 7.8% Other Indo-European 119 7.8% Asian & Pacific Islander 0 0.0% Other languages 0 0.0%
Place of birth & citizenship
Origin Count % Native born (US) 1,635 91.8% Born in same state 1,635 91.8% Born in different state 1,426 80.1% Foreign born 0 0.0% Naturalized citizen 146 8.2% Not a US citizen 64 43.8%
Ancestry
Ancestry Count % French 208 11.7% Italian 176 9.9% Arab 59 3.3%
Ancestry Count % Dutch 7 0.4% Polish 3 0.2%
Technology access
Metric % of households Computer access 29.6% Internet access 96.4%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 78615
What city is ZIP code 78615 in?
ZIP code 78615 is primarily assigned to Coupland, Texas.
What county is ZIP code 78615 in?
ZIP code 78615 falls within Williamson County, Texas.
Is ZIP code 78615 family-oriented?
37% of residents in ZIP code 78615 are under 18, reflecting a younger, family-oriented community.
Does ZIP code 78615 have a large retiree population?
38% of households in ZIP code 78615 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 78615 have a large veteran population?
10% of civilians in ZIP code 78615 are veterans, above the national average of ~7%.
What is the population of ZIP code 78615?
ZIP code 78615 has an estimated population of 1,781 residents, with a density of 33 people per square mile.
What timezone is ZIP code 78615 in?
ZIP code 78615 observes the CST timezone.
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