42431 ZIP Code — Madisonville, KY

Hopkins County, Kentucky

ZIP code 42431 is located in Madisonville, Kentucky, within Hopkins County. It covers approximately 166.67 square miles and serves a population of 26,666 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 270/364.

About ZIP code 42431

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $143,100. Owner-occupancy sits near the national average at 65%.

Median household income is $54,437. Poverty affects 22% of residents, above the national average. 36% 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 20 minutes is near the national average.

College attainment at 18% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (25%) compared to national benchmarks.

Overall, ZIP code 42431 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, and a significant Social Security-dependent population.

26,666

population

166.67

sq mi land

Standard

ZIP type

Central (CT)

timezone

42431 ZIP code map

Cities in ZIP code 42431

Below are the cities the US Postal Service accepts for ZIP code 42431. Using any city not on this list may result in mail delivery delays.

City	Status
Madisonville	Preferred

Nearby ZIP codes

42410 Earlington (5.3 mi) 42436 Manitou (7.4 mi) 42413 Hanson (7.4 mi) 42344 Graham (10.1 mi) 42325 Bremen (11.1 mi) 42442 Nortonville (11.7 mi) 42372 Sacramento (12.4 mi) 42464 White Plains (12.6 mi) 42456 Slaughters (12.7 mi) 42453 Saint Charles (14.2 mi) 42408 Dawson Springs (15.1 mi) 42450 Providence (16.4 mi)

Demographics updated 05/2026

Population
Total population	26,666
Population density	160 / sq mi
State FIPS	21
County FIPS	107

Geography
Land area	166.67 sq mi
Water area	6.35 sq mi
Latitude	37.3329
Longitude	-87.4723
Timezone	Central (CT)
Area code	270/364

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	55.8%	53.1%	47.9%
$50k – $100k	28.7%	30.5%	30.3%
$100k – $200k	13.3%	14.2%	17.6%
Over $200k	2.2%	2.2%	4.2%

Demographics & statistics

26,666

Population

160

People per sq mi

38.2

Median age

$54,437

Median household income

$27,757

Per capita income

$143,100

Median home value

$844

Median monthly rent

64.9%

Home ownership

22.1%

Poverty rate

8.6%

Unemployment

8,508

Housing units

18.1%

Bachelor's or higher

Age distribution

Male Female

878

Under 5

900

853

5–9

874

909

10–14

932

954

15–19

977

801

20–24

820

1,710

25–34

1,753

1,429

35–44

1,464

1,671

45–54

1,712

751

55–59

770

750

60–64

768

1,449

65–74

1,485

785

75–84

804

231

85+

236

← Male

Female →

Age summary

Group	Count	%
Under 18	6,560	24.6%
18 and over	20,106	75.4%
65 and over	4,990	18.7%
Median age	38.2 years

Race & ethnicity

White 83%

Black or African American 8.9%

Two or more races 5%

American Indian / Alaska Native 1%

Asian 1%

Hispanic or Latino 1%

Other race 0.2%

Group	Count	%
White	22,337	83%
Black or African American	2,394	8.9%
Two or more races	1,337	5%
American Indian / Alaska Native	280	1%
Asian	265	1%
Hispanic or Latino	259	1%
Other race	53	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	55.8%	53.1%	47.9%
$50k – $100k	28.7%	30.5%	30.3%
$100k – $200k	13.3%	14.2%	17.6%
Over $200k	2.2%	2.2%	4.2%

Under $10k 8.6%

$10k–$15k 5.1%

$15k–$25k 9.9%

$25k–$35k 6.4%

$35k–$50k 15.5%

$50k–$75k 19.8%

$75k–$100k 13.6%

$100k–$150k 14.4%

$150k–$200k 4.6%

$200k+ 1.9%

Range	% of households
Under $10k	8.6%
$10k–$15k	5.1%
$15k–$25k	9.9%
$25k–$35k	6.4%
$35k–$50k	15.5%
$50k–$75k	19.8%
$75k–$100k	13.6%
$100k–$150k	14.4%
$150k–$200k	4.6%
$200k+	1.9%
Median income	$54,437

Housing

Home values

Under $50k 11.0%

$50k–$100k 22.9%

$100k–$150k 19.0%

$150k–$200k 20.9%

$200k–$300k 18.4%

$300k–$500k 4.6%

$500k–$1M 3.2%

Housing overview

Metric	Value
Median home value	$143,100
Median rent / month	$844
Owner occupied	64.9%
Renter occupied	35.1%
Vacant	12.2%
Single-family detached	77.0%
Large apartment buildings	0.4%
Mobile homes	7.2%
Median rooms	5.7
Avg household size (owned)	2.47

Year built

Era	%
2020 or later	0.4%
2010–2019	3.8%
2000–2009	7.6%
1990–1999	12.0%
1980–1989	16.6%
1970–1979	21.9%
1960–1969	11.3%
1950–1959	12.5%
1940–1949	4.0%
1939 or earlier	10.0%

Bedrooms

Size	% of units
No bedroom (studio)	1.8%
1 bedroom	6.1%
2 bedrooms	24.5%
3 bedrooms	51.4%
4 bedrooms	14.8%
5+ bedrooms	1.4%

Vehicles per household

Vehicles	% of households
No vehicle	5.6%
1 vehicle	33.6%
2 vehicles	37.0%
3 or more	23.9%

Heating fuel

Fuel type	%
Utility gas	53.2%
Electricity	43.7%
Propane / LP gas	2.1%
Wood	0.4%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	4,983	46.2%
Cohabiting couple	761	7.0%
Male householder, no spouse	1,703	15.8%
Female householder, no spouse	3,350	31.0%
Households with children under 18	3,559	33.0%
Households with seniors (65+)	3,497	32.4%
Average household size	2.40

Marital status

Status	Male	Female
Never married	29.4%	23.4%
Married	53.4%	45.9%
Separated	2.2%	1.7%
Widowed	2.9%	10.7%
Divorced	12.1%	18.3%

Education

Less than 9th grade 4.0%

Some HS, no diploma 6.4%

HS graduate 39.0%

Some college, no degree 22.2%

Associate's degree 10.3%

Bachelor's degree 9.9%

Graduate / professional 8.2%

Metric	%
HS diploma or higher	89.6%
Bachelor's or higher	18.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	264	4.4%
Kindergarten	257	4.3%
Elementary school	2,788	46.1%
High school	1,613	26.7%
College / grad school	1,121	18.6%

Employment

Industry of employment

Education & healthcare 29.2%

Manufacturing 16.2%

Retail trade 8.7%

Arts, food & hospitality 7.9%

Public administration 7.6%

Professional & management 6.2%

Finance & real estate 4.8%

Agriculture & mining 4.7%

Other services 4.6%

Transportation & utilities 4.3%

Construction 3.6%

Wholesale trade 1.8%

Information 0.4%

Occupation

Category	%
Management, business & arts	36.0%
Service	16.5%
Sales & office	18.3%
Natural resources & construction	9.3%
Production & transportation	19.8%

Employment type

Type	%
Private sector	77.6%
Government	18.2%
Self-employed	3.6%
Unpaid family workers	0.5%

Commute

Method	%
Drive alone	89.6%
Carpool	5.6%
Public transit	0.0%
Walk	0.9%
Work from home	3.6%
Other means	0.2%
Avg commute (minutes)	19.8

Poverty

All people 22.1%

Under 18 years 33.6%

18 and over 18.3%

Married-couple families 6.0%

Female-led households 39.9%

Income support

Source	% of households
Social Security	36.2%
Retirement income	29.1%
Supplemental Security	6.4%
Cash public assistance	2.9%
Food stamps / SNAP	13.1%

Health indicators

Condition	%
Obesity	42.3%
High blood pressure	43.9%
High cholesterol	38.6%
Diabetes	13.5%
Heart disease	8.2%
Stroke	4.0%
Asthma	11.6%
Arthritis	33.3%
Kidney disease	3.5%
Pulmonary disease	11.4%
Cancer	7.0%

Behavior / access	%
Smoking	25.1%
Binge drinking	14.7%
No physical activity	34.1%
Less than 7 hrs sleep	38.7%
Depression	25.0%
Fair or poor health	22.7%
Poor mental health	18.1%
Poor physical health	15.1%
No health insurance	11.3%
Visited doctor (checkup)	78.9%
Visited dentist	49.0%
Cholesterol screening	89.7%
Teeth loss	20.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,095	5.4%

Disability	%
Any disability	21.8%
Under 18	6.0%
18–64 years	23.5%
65 and over	38.5%

Health insurance coverage

Type	%
Private insurance	63.1%
Public insurance	47.9%
No insurance	4.0%
Uninsured under 19	2.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	24,888	93.3%
Spanish	219	0.9%
Other Indo-European	197	0.8%
Asian & Pacific Islander	22	0.1%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	26,032	97.6%
Born in same state	25,898	97.1%
Born in different state	20,750	77.8%
Foreign born	134	0.5%
Naturalized citizen	634	2.4%
Not a US citizen	214	33.8%

Ancestry

Ancestry	Count	%
French	3,812	14.3%
Arab	3,398	12.7%
Italian	2,047	7.7%
English	213	0.8%

Ancestry	Count	%
Irish	60	0.2%
Polish	30	0.1%
German	9	0%
Dutch	3	0%

Technology access

Metric	% of households
Computer access	40.5%
Internet access	93.8%

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

Frequently asked questions about ZIP code 42431

What city is ZIP code 42431 in?

ZIP code 42431 is primarily assigned to Madisonville, Kentucky.

What county is ZIP code 42431 in?

ZIP code 42431 falls within Hopkins County, Kentucky.

What is the poverty rate in ZIP code 42431?

22% of residents in ZIP code 42431 live below the poverty line, above the national average.

Does ZIP code 42431 have a large retiree population?

36% of households in ZIP code 42431 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 42431?

The median home value in ZIP code 42431 is $143,100.

What is the population of ZIP code 42431?

ZIP code 42431 has an estimated population of 26,666 residents, with a density of 160 people per square mile.

What timezone is ZIP code 42431 in?

ZIP code 42431 observes the CST timezone.