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Kentucky ZIP Codes
Knox County
Gray, KY
40734
40734 ZIP Code — Gray, KY
Knox County, Kentucky
ZIP code 40734 is located in
Gray ,
Kentucky ,
within Knox County .
It covers approximately 45.43 square miles and serves a population of
3,207 residents.
This is a standard ZIP code in the Eastern (ET) timezone,
served by area code 606 .
About ZIP code 40734
The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $105,800. Owner-occupancy is high at 80%, well above the national average.
Median household income is $41,071. Poverty affects 25% of residents, above the national average. SNAP benefit usage at 25% of households reflects economic stress in the area. 37% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is service, with education and healthcare as the leading industry. The average commute of 24 minutes is near the national average. Remote work is prevalent — 25% of workers work from home.
College attainment at 8% is below the national average, consistent with a trades and production-oriented local economy.
Health indicators show elevated rates of obesity (47%), smoking (32%) compared to national benchmarks.
Notable community characteristics include disability rates above the national average at 27%.
Overall, ZIP code 40734 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, high homeownership, a high rate of remote workers, a significant Social Security-dependent population, and elevated reliance on food assistance.
40734 ZIP code map
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Cities in ZIP code 40734
Below are the cities the US Postal Service accepts for ZIP code 40734. Using any city not on this list may result in mail delivery delays.
City
Status
Gray
Preferred
Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
3,207
Population density
71 / sq mi
State FIPS
21
County FIPS
121
Geography
Land area
45.43 sq mi
Water area
0.10 sq mi
Latitude
36.9465
Longitude
-83.9578
Timezone
Eastern (ET)
Area code
606
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
68.8%
72.0%
47.9%
$50k – $100k
26.1%
20.7%
30.3%
$100k – $200k
5.1%
6.7%
17.6%
Over $200k
0.0%
0.6%
4.2%
Demographics & statistics
$41,071
Median household income
$105,800
Median home value
Age distribution
Age summary
Group Count % Under 18 640 20.0% 18 and over 2,567 80.0% 65 and over 365 11.4% Median age 43.8 years
Race & ethnicity
Black or African American
0.3%
Group Count % White 3,106 96.9% Two or more races 91 2.8% Black or African American 10 0.3%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
68.8%
72.0%
47.9%
$50k – $100k
26.1%
20.7%
30.3%
$100k – $200k
5.1%
6.7%
17.6%
Over $200k
0.0%
0.6%
4.2%
Range % of households Under $10k 11.6% $10k–$15k 6.0% $15k–$25k 17.1% $25k–$35k 6.8% $35k–$50k 23.8% $50k–$75k 9.5% $75k–$100k 10.5% $100k–$150k 13.0% $150k–$200k 1.8% Median income $41,071
Housing
Housing overview
Metric Value Median home value $105,800 Median rent / month $614 Owner occupied 80.3% Renter occupied 19.7% Vacant 20.3% Single-family detached 58.9% Large apartment buildings 0.0% Mobile homes 40.0% Median rooms 5.7 Avg household size (owned) 2.59
Year built
Era % 2020 or later 0.0% 2010–2019 3.6% 2000–2009 17.0% 1990–1999 29.6% 1980–1989 14.9% 1970–1979 20.7% 1960–1969 4.5% 1950–1959 3.5% 1940–1949 4.2% 1939 or earlier 2.0%
Bedrooms
Size % of units No bedroom (studio) 0.0% 1 bedroom 0.5% 2 bedrooms 29.4% 3 bedrooms 59.2% 4 bedrooms 8.7% 5+ bedrooms 2.3%
Vehicles per household
Vehicles % of households No vehicle 0.5% 1 vehicle 33.6% 2 vehicles 28.4% 3 or more 37.5%
Heating fuel
Fuel type % Utility gas 28.1% Electricity 61.6% Propane / LP gas 5.3% Fuel oil 2.0% Wood 2.7%
Households & families
Household type Count % Married-couple family 566 47.0% Cohabiting couple 56 4.7% Male householder, no spouse 222 18.4% Female householder, no spouse 360 29.9% Households with children under 18 348 28.9% Households with seniors (65+) 302 25.1% Average household size 2.66
Marital status
Status Male Female Never married 44.0% 11.9% Married 37.7% 51.6% Separated 4.2% 4.7% Widowed 0.4% 10.9% Divorced 13.7% 20.9%
Education
Some HS, no diploma
12.8%
Some college, no degree
25.2%
Graduate / professional
2.7%
Metric % HS diploma or higher 80.1% Bachelor's or higher 8.4%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 33 4.7% Kindergarten 6 0.9% Elementary school 211 30.4% High school 295 42.4% College / grad school 150 21.6%
Employment
Industry of employment
Education & healthcare
28.1%
Professional & management
21.6%
Public administration
9.1%
Transportation & utilities
5.4%
Arts, food & hospitality
2.1%
Finance & real estate
0.7%
Occupation
Category % Management, business & arts 18.9% Service 34.9% Sales & office 22.3% Natural resources & construction 8.5% Production & transportation 15.4%
Employment type
Type % Private sector 72.2% Government 14.7% Self-employed 13.1% Unpaid family workers 0.0%
Commute
Method % Drive alone 70.2% Carpool 5.3% Public transit 0.0% Walk 0.0% Work from home 24.5% Other means 0.0% Avg commute (minutes) 23.5
Poverty
Married-couple families
11.5%
Female-led households
40.9%
Income support
Source % of households Social Security 37.1% Retirement income 24.0% Supplemental Security 33.7% Cash public assistance 3.6% Food stamps / SNAP 24.7%
Health indicators
Condition % Obesity 47.0% High blood pressure 45.6% High cholesterol 38.1% Diabetes 14.8% Heart disease 9.4% Stroke 4.6% Asthma 12.6% Arthritis 35.5% Kidney disease 3.9% Pulmonary disease 15.2% Cancer 6.5%
Behavior / access % Smoking 31.9% Binge drinking 14.1% No physical activity 39.0% Less than 7 hrs sleep 39.6% Depression 28.9% Fair or poor health 28.9% Poor mental health 21.0% Poor physical health 18.7% No health insurance 13.3% Visited doctor (checkup) 76.7% Visited dentist 44.2% Cholesterol screening 87.0% Teeth loss 29.3%
Veterans & disability
Veterans Count % Civilian veterans 108 4.2%
Disability % Any disability 26.8% Under 18 15.0% 18–64 years 27.6% 65 and over 42.7%
Health insurance coverage
Type % Private insurance 43.4% Public insurance 62.5% No insurance 5.3% Uninsured under 19 6.6%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 3,041 94.8% Spanish 0 0.0% Other Indo-European 0 0.0% Asian & Pacific Islander 0 0.0% Other languages 0 0.0%
Place of birth & citizenship
Origin Count % Native born (US) 3,207 100.0% Born in same state 3,207 100.0% Born in different state 2,764 86.2% Foreign born 0 0.0% Naturalized citizen 0 0.0% Not a US citizen 0 0.0%
Ancestry
Ancestry Count % Arab 490 15.3% Italian 337 10.5%
Ancestry Count % French 229 7.1%
Technology access
Metric % of households Computer access 37.5% Internet access 90.8%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 40734
What city is ZIP code 40734 in?
ZIP code 40734 is primarily assigned to Gray, Kentucky.
What county is ZIP code 40734 in?
ZIP code 40734 falls within Knox County, Kentucky.
What is the poverty rate in ZIP code 40734?
25% of residents in ZIP code 40734 live below the poverty line, above the national average.
How educated is the population of ZIP code 40734?
8% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.
Is ZIP code 40734 mostly owner-occupied?
80% of occupied units in ZIP code 40734 are owner-occupied, well above the national average.
Does ZIP code 40734 have a large retiree population?
37% of households in ZIP code 40734 receive Social Security income, suggesting a significant retiree or disability population.
What timezone is ZIP code 40734 in?
ZIP code 40734 observes the EST timezone.
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