42157 ZIP Code — Mount Hermon, KY

Monroe County, Kentucky

ZIP code 42157 is located in Mount Hermon, Kentucky, within Monroe County. It covers approximately 18.53 square miles and serves a population of 584 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 270/364.

About ZIP code 42157

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1980s, giving the area an established character. Median home value is $124,000. Owner-occupancy is high at 78%, well above the national average.

Median household income is $103,375. SNAP benefit usage at 25% of households reflects economic stress in the area. 34% 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 23 minutes is near the national average.

College attainment at 9% 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. 16% of residents lack health insurance, above the national average.

Overall, ZIP code 42157 reflects a community defined by a trades-oriented workforce, high homeownership, a significant Social Security-dependent population, and elevated reliance on food assistance.

584

population

18.53

sq mi land

Standard

ZIP type

Central (CT)

timezone

42157 ZIP code map

Cities in ZIP code 42157

Below are the cities the US Postal Service accepts for ZIP code 42157. Using any city not on this list may result in mail delivery delays.

City	Status
Mount Hermon	Preferred

Nearby ZIP codes

42167 Tompkinsville (8.4 mi) 42140 Gamaliel (8.8 mi) 42133 Fountain Run (9.1 mi) 42166 Summer Shade (9.2 mi) 42123 Austin (10.8 mi) 42141 Glasgow (13 mi) 42129 Edmonton (17.8 mi) 38575 Moss (18.1 mi) 42154 Knob Lick (18.7 mi) 37150 Red Boiling Springs (18.9 mi)

Demographics updated 05/2026

Population
Total population	584
Population density	32 / sq mi
State FIPS	21
County FIPS	171

Geography
Land area	18.53 sq mi
Water area	0.03 sq mi
Latitude	36.7899
Longitude	-85.8022
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	49.3%	59.8%	47.9%
$50k – $100k	12.7%	23.7%	30.3%
$100k – $200k	35.6%	13.6%	17.6%
Over $200k	2.4%	3.0%	4.2%

Demographics & statistics

584

Population

People per sq mi

36.1

Median age

$103,375

Median household income

$25,160

Per capita income

$124,000

Median home value

$572

Median monthly rent

77.9%

Home ownership

15.1%

Poverty rate

0.0%

Unemployment

164

Housing units

8.9%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	139	23.8%
18 and over	445	76.2%
65 and over	59	10.1%
Median age	36.1 years

Race & ethnicity

White 100%

Group	Count	%
White	584	100%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	49.3%	59.8%	47.9%
$50k – $100k	12.7%	23.7%	30.3%
$100k – $200k	35.6%	13.6%	17.6%
Over $200k	2.4%	3.0%	4.2%

Under $10k 3.2%

$15k–$25k 5.8%

$25k–$35k 11.7%

$35k–$50k 7.8%

$50k–$75k 7.1%

$75k–$100k 9.7%

$100k–$150k 42.9%

$150k–$200k 11.7%

Range	% of households
Under $10k	3.2%
$15k–$25k	5.8%
$25k–$35k	11.7%
$35k–$50k	7.8%
$50k–$75k	7.1%
$75k–$100k	9.7%
$100k–$150k	42.9%
$150k–$200k	11.7%
Median income	$103,375

Housing

Home values

Under $50k 25.0%

$50k–$100k 4.2%

$100k–$150k 25.8%

$150k–$200k 37.5%

$200k–$300k 7.5%

Housing overview

Metric	Value
Median home value	$124,000
Median rent / month	$572
Owner occupied	77.9%
Renter occupied	22.1%
Vacant	22.2%
Single-family detached	79.8%
Large apartment buildings	0.0%
Mobile homes	20.2%
Median rooms	6.2
Avg household size (owned)	4.22

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	15.2%
1990–1999	14.6%
1980–1989	27.8%
1970–1979	11.1%
1960–1969	15.2%
1950–1959	4.0%
1940–1949	3.5%
1939 or earlier	8.6%

Bedrooms

Size	% of units
No bedroom (studio)	2.0%
1 bedroom	0.0%
2 bedrooms	16.7%
3 bedrooms	44.4%
4 bedrooms	17.7%
5+ bedrooms	19.2%

Vehicles per household

Vehicles	% of households
No vehicle	2.6%
1 vehicle	4.5%
2 vehicles	44.8%
3 or more	48.1%

Heating fuel

Fuel type	%
Electricity	63.6%
Propane / LP gas	25.3%
Wood	11.0%

Households & families

Household type	Count	%
Married-couple family	129	83.8%
Cohabiting couple	5	3.2%
Male householder, no spouse	0	0.0%
Female householder, no spouse	20	13.0%
Households with children under 18	68	44.2%
Households with seniors (65+)	53	34.4%
Average household size	3.79

Marital status

Status	Male	Female
Never married	40.3%	23.8%
Married	52.9%	58.9%
Separated	0.0%	0.0%
Widowed	0.0%	6.5%
Divorced	6.7%	10.7%

Education

Less than 9th grade 10.8%

Some HS, no diploma 11.7%

HS graduate 40.3%

Some college, no degree 20.9%

Associate's degree 7.4%

Bachelor's degree 2.2%

Graduate / professional 6.8%

Metric	%
HS diploma or higher	77.5%
Bachelor's or higher	8.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	21	16.2%
Kindergarten	13	10.0%
Elementary school	66	50.8%
High school	26	20.0%
College / grad school	4	3.1%

Employment

Industry of employment

Education & healthcare 32.0%

Agriculture & mining 22.1%

Construction 20.6%

Transportation & utilities 6.8%

Public administration 6.8%

Manufacturing 3.9%

Other services 3.2%

Professional & management 2.5%

Finance & real estate 2.1%

Occupation

Category	%
Management, business & arts	37.7%
Service	12.5%
Sales & office	9.6%
Natural resources & construction	20.3%
Production & transportation	19.9%

Employment type

Type	%
Private sector	49.1%
Government	26.3%
Self-employed	18.9%
Unpaid family workers	5.7%

Commute

Method	%
Drive alone	75.4%
Carpool	2.5%
Public transit	0.0%
Walk	8.9%
Work from home	13.2%
Other means	0.0%
Avg commute (minutes)	22.7

Poverty

All people 15.1%

Under 18 years 38.1%

18 and over 7.9%

Married-couple families 5.4%

Female-led households 83.3%

Income support

Source	% of households
Social Security	34.4%
Retirement income	11.7%
Supplemental Security	31.2%
Cash public assistance	0.0%
Food stamps / SNAP	25.3%

Health indicators

Condition	%
Obesity	36.5%
High blood pressure	38.0%
High cholesterol	36.4%
Diabetes	10.5%
Heart disease	7.0%
Stroke	3.1%
Asthma	11.2%
Arthritis	29.3%
Kidney disease	2.8%
Pulmonary disease	9.9%
Cancer	6.2%

Behavior / access	%
Smoking	25.4%
Binge drinking	16.6%
No physical activity	30.9%
Less than 7 hrs sleep	37.6%
Depression	26.3%
Fair or poor health	19.3%
Poor mental health	18.7%
Poor physical health	13.3%
No health insurance	12.0%
Visited doctor (checkup)	74.7%
Visited dentist	54.3%
Cholesterol screening	88.7%
Teeth loss	18.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	13	2.9%

Disability	%
Any disability	13.5%
Under 18	0.0%
18–64 years	9.3%
65 and over	72.9%

Health insurance coverage

Type	%
Private insurance	56.8%
Public insurance	32.0%
No insurance	16.3%
Uninsured under 19	24.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	538	92.1%
Spanish	9	1.7%
Other Indo-European	0	0.0%
Asian & Pacific Islander	9	1.7%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	584	100.0%
Born in same state	584	100.0%
Born in different state	516	88.4%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Arab	137	23.5%
French	136	23.3%

Ancestry	Count	%
Italian	63	10.8%

Technology access

Metric	% of households
Computer access	26.4%
Internet access	83.8%

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

Frequently asked questions about ZIP code 42157

What city is ZIP code 42157 in?

ZIP code 42157 is primarily assigned to Mount Hermon, Kentucky.

What county is ZIP code 42157 in?

ZIP code 42157 falls within Monroe County, Kentucky.

How educated is the population of ZIP code 42157?

9% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the poverty rate in ZIP code 42157?

15% of residents in ZIP code 42157 live below the poverty line, above the national average.

What is the typical home value in ZIP code 42157?

The median home value in ZIP code 42157 is $124,000.

What is the median household income in ZIP code 42157?

The median household income in ZIP code 42157 is $103,375, above the national median of ~$75,000.

What timezone is ZIP code 42157 in?

ZIP code 42157 observes the CST timezone.