Knox County, KY ZIP Codes
Kentucky (KY) · 16 ZIP codes · 16 cities
16
ZIP codes
29,909
population (2021)
-6.2%
pop change since 2010
21121
FIPS code
Knox County ZIP code map
About Knox County
Knox County is located in Kentucky and contains 16 ZIP codes across 16 cities and communities.
The county's population was 29,909 as of 2021,
a decrease of
6.2% from 31,883 in 2010.
The timezone is Central Time (observes DST).
The Federal Information Processing System (FIPS) code for Knox County is 21121.
| Population | |
|---|---|
| 2021 population | 29,909 |
| 2010 population | 31,883 |
| Change | -6.2% |
| County details | |
|---|---|
| State | Kentucky |
| FIPS code | 21121 |
| Timezone | Central |
| Daylight saving | Yes |
Cities in Knox County
Artemus
Barbourville
Bimble
Bryants Store
Cannon
Dewitt
Flat Lick
Girdler
Gray
Green Road
Heidrick
Hinkle
Scalf
Trosper
Walker
Woodbine
ZIP codes for Knox County, KY (16)
| ZIP code | City | County | Map |
|---|---|---|---|
| 40734 | Gray | Knox | View map |
| 40771 | Woodbine | Knox | View map |
| 40903 | Artemus | Knox | View map |
| 40906 | Barbourville | Knox | View map |
| 40915 | Bimble | Knox | View map |
| 40921 | Bryants Store | Knox | View map |
| 40923 | Cannon | Knox | View map |
| 40930 | Dewitt | Knox | View map |
| 40935 | Flat Lick | Knox | View map |
| 40943 | Girdler | Knox | View map |
| 40946 | Green Road | Knox | View map |
| 40949 | Heidrick | Knox | View map |
| 40953 | Hinkle | Knox | View map |
| 40982 | Scalf | Knox | View map |
| 40995 | Trosper | Knox | View map |
| 40997 | Walker | Knox | View map |
Demographics & statistics
23,652
Population
38.0
Median age
$25,122
Median household income
$18,604
Per capita income
$39,353
Median home value
$223
Median monthly rent
68.5%
Home ownership
32.2%
Poverty rate
11.1%
Unemployment
7,592
Housing units
8.2%
Bachelor's or higher
Age distribution
Male
Female
899
Under 5
565
926
5–9
583
1,061
10–14
667
1,020
15–19
641
937
20–24
590
2,054
25–34
1,293
1,600
35–44
1,006
1,861
45–54
1,171
964
55–59
607
916
60–64
577
1,343
65–74
845
687
75–84
433
249
85+
157
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 5,636 | 23.6% |
| 18 and over | 18,016 | 76.4% |
| 65 and over | 3,714 | 18.7% |
| Median age | 38.0 years | |
Race & ethnicity
White
95.6%
Two or more races
2.3%
Black or African American
0.9%
Hispanic or Latino
0.7%
American Indian / Alaska Native
0.2%
Asian
0.1%
Other race
0.1%
Native Hawaiian / Pacific Islander
0.1%
| Group | Count | % |
|---|---|---|
| White | 22,765 | 95.6% |
| Two or more races | 553 | 2.3% |
| Black or African American | 225 | 0.9% |
| Hispanic or Latino | 169 | 0.7% |
| American Indian / Alaska Native | 43 | 0.2% |
| Asian | 26 | 0.1% |
| Other race | 23 | 0.1% |
| Native Hawaiian / Pacific Islander | 17 | 0.1% |
Household income
Under $10k
10.5%
$10k–$15k
10.9%
$15k–$25k
15.6%
$25k–$35k
16.3%
$35k–$50k
14.0%
$50k–$75k
16.9%
$75k–$100k
10.3%
$100k–$150k
4.1%
$150k–$200k
1.1%
$200k+
0.2%
| Range | % of households |
|---|---|
| Under $10k | 10.5% |
| $10k–$15k | 10.9% |
| $15k–$25k | 15.6% |
| $25k–$35k | 16.3% |
| $35k–$50k | 14.0% |
| $50k–$75k | 16.9% |
| $75k–$100k | 10.3% |
| $100k–$150k | 4.1% |
| $150k–$200k | 1.1% |
| $200k+ | 0.2% |
| Median income | $25,122 |
Housing
Home values
Under $50k
43.9%
$50k–$100k
23.3%
$100k–$150k
16.1%
$150k–$200k
7.8%
$200k–$300k
7.0%
$300k–$500k
1.1%
$500k–$1M
0.8%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $39,353 |
| Median rent / month | $223 |
| Owner occupied | 68.5% |
| Renter occupied | 31.5% |
| Vacant | 22.3% |
| Single-family detached | 52.6% |
| Large apartment buildings | 0.0% |
| Mobile homes | 40.0% |
| Median rooms | 4.9 |
| Avg household size (owned) | 2.78 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.1% |
| 2010–2019 | 5.0% |
| 2000–2009 | 6.8% |
| 1990–1999 | 23.6% |
| 1980–1989 | 24.8% |
| 1970–1979 | 22.4% |
| 1960–1969 | 6.7% |
| 1950–1959 | 3.8% |
| 1940–1949 | 1.4% |
| 1939 or earlier | 5.4% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.2% |
| 1 bedroom | 1.5% |
| 2 bedrooms | 32.9% |
| 3 bedrooms | 53.5% |
| 4 bedrooms | 9.8% |
| 5+ bedrooms | 2.2% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 9.6% |
| 1 vehicle | 35.2% |
| 2 vehicles | 33.1% |
| 3 or more | 22.1% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 24.5% |
| Electricity | 66.8% |
| Propane / LP gas | 2.3% |
| Fuel oil | 0.3% |
| Wood | 4.2% |
| No fuel used | 0.7% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 3,901 | 52.1% |
| Cohabiting couple | 381 | 2.3% |
| Male householder, no spouse | 1,644 | 18.6% |
| Female householder, no spouse | 2,967 | 26.9% |
| Households with children under 18 | 2,734 | 31.6% |
| Households with seniors (65+) | 2,721 | 30.7% |
| Average household size | 2.82 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 27.6% | 15.2% |
| Married | 54.0% | 52.8% |
| Separated | 4.5% | 9.8% |
| Widowed | 1.6% | 9.4% |
| Divorced | 12.4% | 12.7% |
Education
Less than 9th grade
15.8%
Some HS, no diploma
12.9%
HS graduate
44.9%
Some college, no degree
13.7%
Associate's degree
4.6%
Bachelor's degree
3.8%
Graduate / professional
4.4%
| Metric | % |
|---|---|
| HS diploma or higher | 71.3% |
| Bachelor's or higher | 8.2% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 250 | 5.8% |
| Kindergarten | 200 | 3.0% |
| Elementary school | 2,790 | 51.5% |
| High school | 1,108 | 15.5% |
| College / grad school | 1,140 | 10.9% |
Employment
Industry of employment
Education & healthcare
27.4%
Professional & management
11.3%
Retail trade
9.6%
Manufacturing
7.4%
Construction
7.4%
Arts, food & hospitality
6.0%
Public administration
4.9%
Transportation & utilities
4.9%
Agriculture & mining
2.9%
Wholesale trade
1.6%
Other services
1.5%
Information
1.1%
Finance & real estate
0.7%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 22.8% |
| Service | 21.8% |
| Sales & office | 18.5% |
| Natural resources & construction | 10.3% |
| Production & transportation | 13.3% |
Employment type
| Type | % |
|---|---|
| Private sector | 69.5% |
| Government | 13.2% |
| Self-employed | 3.9% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 73.6% |
| Carpool | 7.0% |
| Public transit | 0.0% |
| Walk | 2.1% |
| Other means | 0.0% |
| Avg commute (minutes) | 18.4 |
Poverty
All people
32.2%
Under 18 years
44.5%
18 and over
27.9%
Married-couple families
18.8%
Female-led households
43.7%
Income support
| Source | % of households |
|---|---|
| Social Security | 47.3% |
| Retirement income | 14.0% |
| Supplemental Security | 22.3% |
| Cash public assistance | 1.3% |
| Food stamps / SNAP | 33.8% |
Health indicators
| Condition | % |
|---|---|
| High blood pressure | 46.9% |
| High cholesterol | 39.0% |
| Heart disease | 10.1% |
| Stroke | 5.2% |
| Asthma | 13.2% |
| Arthritis | 36.8% |
| Kidney disease | 4.2% |
| Pulmonary disease | 16.9% |
| Cancer | 6.6% |
| Behavior / access | % |
|---|---|
| Binge drinking | 13.8% |
| No physical activity | 41.5% |
| Less than 7 hrs sleep | 40.0% |
| Fair or poor health | 32.0% |
| Poor mental health | 21.9% |
| Poor physical health | 20.4% |
| No health insurance | 14.6% |
| Visited doctor (checkup) | 76.7% |
| Visited dentist | 41.1% |
| Cholesterol screening | 86.1% |
| Teeth loss | 32.7% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 706 | 2.5% |
| Disability | % |
|---|---|
| Any disability | 23.3% |
| Under 18 | 4.4% |
| 18–64 years | 22.5% |
| 65 and over | 36.3% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 33.6% |
| Public insurance | 70.2% |
| Uninsured under 19 | 0.9% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 22,188 | 94.2% |
| Spanish | 24 | 0.0% |
| Other Indo-European | 14 | 0.0% |
| Asian & Pacific Islander | 10 | 0.0% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 23,527 | 99.4% |
| Born in same state | 23,517 | 99.4% |
| Born in different state | 19,543 | 88.3% |
| Foreign born | 10 | 0.0% |
| Naturalized citizen | 125 | 0.6% |
| Not a US citizen | 75 | 17.4% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 1,992 | 8.4% |
| Arab | 1,830 | 7.7% |
| French | 1,707 | 7.2% |
| Ancestry | Count | % |
|---|---|---|
| English | 142 | 0.6% |
| Polish | 6 | 0% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 37.0% |
| Internet access | 84.7% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
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