42539 ZIP Code — Liberty, KY

Casey County, Kentucky

ZIP code 42539 is located in Liberty, Kentucky, within Casey County. It covers approximately 219.65 square miles and serves a population of 9,896 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 606.

About ZIP code 42539

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 $123,800. Owner-occupancy sits near the national average at 70%.

Median household income is $41,861. Poverty affects 25% of residents, above the national average. SNAP benefit usage at 20% of households reflects economic stress in the area. 45% 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. The average commute of 27 minutes is near the national average.

College attainment at 13% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (28%) compared to national benchmarks.

Overall, ZIP code 42539 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, a significant Social Security-dependent population, and elevated reliance on food assistance.

9,896

population

219.65

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

42539 ZIP code map

Cities in ZIP code 42539

Below are the cities the US Postal Service accepts for ZIP code 42539. Using any city not on this list may result in mail delivery delays.

City	Status
Liberty	Acceptable
Liberty	Preferred

Nearby ZIP codes

42528 Dunnville (8.1 mi) 42565 Windsor (9.9 mi) 42541 Middleburg (11.1 mi) 40437 Hustonville (12.9 mi) 40442 Kings Mountain (13 mi) 40009 Bradfordsville (14.7 mi) 42642 Russell Springs (16.8 mi) 42553 Science Hill (17.1 mi) 40489 Waynesburg (17.4 mi) 40328 Gravel Switch (18.4 mi) 42544 Nancy (18.8 mi) 40464 Parksville (19.2 mi)

Demographics updated 05/2026

Population
Total population	9,896
Population density	45 / sq mi
State FIPS	21
County FIPS	045

Geography
Land area	219.65 sq mi
Water area	0.86 sq mi
Latitude	37.2877
Longitude	-84.9667
Timezone	Eastern (ET)
Area code	606

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	70.5%	70.8%	47.9%
$50k – $100k	21.6%	20.6%	30.3%
$100k – $200k	7.3%	7.4%	17.6%
Over $200k	0.6%	1.1%	4.2%

Demographics & statistics

9,896

Population

People per sq mi

41.9

Median age

$41,861

Median household income

$21,017

Per capita income

$123,800

Median home value

$603

Median monthly rent

69.6%

Home ownership

24.7%

Poverty rate

8.8%

Unemployment

3,459

Housing units

12.9%

Bachelor's or higher

Age distribution

Male Female

257

Under 5

285

242

5–9

267

317

10–14

350

290

15–19

320

289

20–24

320

525

25–34

580

562

35–44

622

609

45–54

673

279

55–59

309

335

60–64

371

582

65–74

644

312

75–84

345

100

85+

111

← Male

Female →

Age summary

Group	Count	%
Under 18	2,082	21.0%
18 and over	7,814	79.0%
65 and over	2,094	21.2%
Median age	41.9 years

Race & ethnicity

White 93.7%

Two or more races 3.2%

Black or African American 1.4%

Hispanic or Latino 1.1%

Asian 0.3%

Other race 0.3%

Group	Count	%
White	9,373	93.7%
Two or more races	320	3.2%
Black or African American	140	1.4%
Hispanic or Latino	109	1.1%
Asian	31	0.3%
Other race	27	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	70.5%	70.8%	47.9%
$50k – $100k	21.6%	20.6%	30.3%
$100k – $200k	7.3%	7.4%	17.6%
Over $200k	0.6%	1.1%	4.2%

Under $10k 7.9%

$10k–$15k 10.5%

$15k–$25k 13.2%

$25k–$35k 11.0%

$35k–$50k 19.8%

$50k–$75k 16.3%

$75k–$100k 8.8%

$100k–$150k 9.7%

$150k–$200k 1.2%

$200k+ 1.6%

Range	% of households
Under $10k	7.9%
$10k–$15k	10.5%
$15k–$25k	13.2%
$25k–$35k	11.0%
$35k–$50k	19.8%
$50k–$75k	16.3%
$75k–$100k	8.8%
$100k–$150k	9.7%
$150k–$200k	1.2%
$200k+	1.6%
Median income	$41,861

Housing

Home values

Under $50k 17.8%

$50k–$100k 20.7%

$100k–$150k 17.9%

$150k–$200k 18.5%

$200k–$300k 14.2%

$300k–$500k 7.2%

$500k–$1M 1.1%

$1M+ 2.5%

Housing overview

Metric	Value
Median home value	$123,800
Median rent / month	$603
Owner occupied	69.6%
Renter occupied	30.4%
Vacant	16.8%
Single-family detached	69.4%
Large apartment buildings	0.1%
Mobile homes	23.8%
Median rooms	5.4
Avg household size (owned)	2.64

Year built

Era	%
2020 or later	0.5%
2010–2019	7.4%
2000–2009	13.4%
1990–1999	19.7%
1980–1989	18.6%
1970–1979	15.9%
1960–1969	9.5%
1950–1959	6.1%
1940–1949	2.4%
1939 or earlier	6.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.2%
1 bedroom	4.1%
2 bedrooms	29.1%
3 bedrooms	48.3%
4 bedrooms	14.0%
5+ bedrooms	4.3%

Vehicles per household

Vehicles	% of households
No vehicle	8.2%
1 vehicle	27.6%
2 vehicles	40.4%
3 or more	23.9%

Heating fuel

Fuel type	%
Utility gas	11.7%
Electricity	71.8%
Propane / LP gas	5.7%
Fuel oil	0.9%
Wood	8.9%

Households & families

Household type	Count	%
Married-couple family	1,710	44.4%
Cohabiting couple	231	6.0%
Male householder, no spouse	742	19.3%
Female householder, no spouse	1,166	30.3%
Households with children under 18	1,148	29.8%
Households with seniors (65+)	1,495	38.8%
Average household size	2.47

Marital status

Status	Male	Female
Never married	33.0%	21.7%
Married	44.9%	44.5%
Separated	3.4%	2.5%
Widowed	3.4%	18.2%
Divorced	15.3%	13.0%

Education

Less than 9th grade 14.6%

Some HS, no diploma 8.1%

HS graduate 41.7%

Some college, no degree 16.2%

Associate's degree 6.6%

Bachelor's degree 6.5%

Graduate / professional 6.4%

Metric	%
HS diploma or higher	77.3%
Bachelor's or higher	12.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	52	2.9%
Kindergarten	127	7.0%
Elementary school	885	49.1%
High school	404	22.4%
College / grad school	336	18.6%

Employment

Industry of employment

Education & healthcare 23.1%

Manufacturing 19.6%

Construction 8.3%

Transportation & utilities 7.9%

Retail trade 6.7%

Agriculture & mining 6.4%

Other services 6.2%

Finance & real estate 5.3%

Arts, food & hospitality 4.5%

Wholesale trade 3.6%

Public administration 3.5%

Professional & management 3.4%

Information 1.5%

Occupation

Category	%
Management, business & arts	30.6%
Service	13.8%
Sales & office	19.9%
Natural resources & construction	12.9%
Production & transportation	22.9%

Employment type

Type	%
Private sector	67.5%
Government	17.1%
Self-employed	12.5%
Unpaid family workers	2.9%

Commute

Method	%
Drive alone	76.7%
Carpool	12.6%
Public transit	0.8%
Walk	3.1%
Work from home	5.9%
Other means	0.9%
Avg commute (minutes)	27.1

Poverty

All people 24.7%

Under 18 years 27.8%

18 and over 23.8%

Married-couple families 9.3%

Female-led households 48.6%

Income support

Source	% of households
Social Security	44.7%
Retirement income	24.8%
Supplemental Security	9.5%
Cash public assistance	0.5%
Food stamps / SNAP	20.3%

Health indicators

Condition	%
Obesity	37.4%
High blood pressure	44.2%
High cholesterol	38.7%
Diabetes	13.6%
Heart disease	9.1%
Stroke	4.4%
Asthma	12.1%
Arthritis	35.1%
Kidney disease	3.7%
Pulmonary disease	13.4%
Cancer	7.2%

Behavior / access	%
Smoking	27.5%
Binge drinking	14.3%
No physical activity	37.0%
Less than 7 hrs sleep	39.7%
Depression	27.5%
Fair or poor health	25.5%
Poor mental health	19.6%
Poor physical health	17.0%
No health insurance	12.9%
Visited doctor (checkup)	76.0%
Visited dentist	49.2%
Cholesterol screening	88.4%
Teeth loss	24.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	431	5.5%

Disability	%
Any disability	20.2%
Under 18	5.6%
18–64 years	18.0%
65 and over	41.3%

Health insurance coverage

Type	%
Private insurance	41.1%
Public insurance	60.1%
No insurance	12.0%
Uninsured under 19	13.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	9,354	94.5%
Spanish	213	2.3%
Other Indo-European	90	1.0%
Asian & Pacific Islander	91	1.0%
Other languages	1	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	9,774	98.8%
Born in same state	9,749	98.5%
Born in different state	7,857	79.4%
Foreign born	25	0.3%
Naturalized citizen	122	1.2%
Not a US citizen	15	12.3%

Ancestry

Ancestry	Count	%
Arab	2,550	25.8%
French	1,111	11.2%
Italian	399	4%

Ancestry	Count	%
Polish	32	0.3%
English	31	0.3%
German	13	0.1%

Technology access

Metric	% of households
Computer access	38.9%
Internet access	85.7%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 42539

What city is ZIP code 42539 in?

ZIP code 42539 is primarily assigned to Liberty, Kentucky.

What county is ZIP code 42539 in?

ZIP code 42539 falls within Casey County, Kentucky.

What is the poverty rate in ZIP code 42539?

25% of residents in ZIP code 42539 live below the poverty line, above the national average.

How educated is the population of ZIP code 42539?

13% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Does ZIP code 42539 have a large retiree population?

45% of households in ZIP code 42539 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 42539?

The median home value in ZIP code 42539 is $123,800.

What timezone is ZIP code 42539 in?

ZIP code 42539 observes the EST timezone.