PlainZIP

Mount Hermon, KY · standard

ZIP Code 42157

Monroe County, Kentucky - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

437
10/sq mi
$101,250
Median income
$175,000
Median home value
10.4%
Bachelor's or higher

The verdict

Mount Hermon pairs an upper-quartile household income with below-median home values, in a rural, homeowner-dominated area.

Top 18%
household income, US ZIPs
36th pct
home value, US ZIPs
10
people per sq mi
77%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 42157 against every reporting US ZIP.

ZIP code 42157 is a sparsely populated ZIP (a standard USPS delivery area) in Mount Hermon, Monroe County, Kentucky, home to just 437 residents across 45.5 square miles, a density of 10 people per square mile, in the Chicago time zone.

ZIP 42157 lands in the middle-income range, with a median household income of $101,250 (70% above the Kentucky average), while per-capita income is $27,512. 28.6% of residents live below the poverty line, and the unemployment rate reads 0.0%. On housing, the median home value is $175,000 (10% above the state average) with median rent at - per month, and 77.0% of occupied units are owner-occupied.

Formal educational attainment runs low here: just 10.4% of adults hold a bachelor's degree or higher, the median age is 30.2, and the average commute is -. We also surface 5 nearby ZIP codes within roughly 10 miles and 5 additional ZIPs sharing Monroe County, so you can benchmark 42157 against its immediate geography rather than a national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 42157, Mount Hermon, KY · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

437

Population

45.5

Area (sq mi)

10

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 42157?

30.2

Median Age

57.6%

Male

42.4%

Female

0.0%

Foreign-Born

White 98.8%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 1.2%
Hispanic or Latino 0.0%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$101,250

Median Household Income

+70% vs state

$27,512

Per Capita Income

28.6%

Poverty Rate

0.0%

Unemployment Rate

How ZIP 42157 ranks nationally

Mount Hermon, KY household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$101,250 Top 18% higher than 82% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). This entry sits in this band. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 56.3%
Bachelor's Degree or Higher 10.4%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

174

Total Housing Units

148

Occupied Units

26

Vacant Units

3.43

Avg Household Size

Occupancy Type

Owner 77.0%
Renter 23.0%

$175,000

Median Home Value

+10% vs state

1978

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 4 business establishments in ZIP 42157, employing approximately 32 people with a combined annual payroll of $2,139,000.

4

Businesses

32

Employees

$2.1M

Annual Payroll

1

Industry Sectors

Industry Establishments % of Total
Construction 3 75.0%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 42157 vs 42140 →

ZIP 42157 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 42157 ranks #5 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 42157 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 42157 ranks the highest of 5 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
42140 Gamaliel, KY 1,264 9.3 mi
42130 Eighty Eight, KY 175 9.4 mi
42166 Summer Shade, KY 2,314 8.4 mi
42167 Tompkinsville, KY 8,145 9.1 mi
42133 Fountain Run, KY 1,370 9.1 mi

More ZIP Codes in Monroe County

42167 standard
Tompkinsville, KY
Pop: 8,145
42166 standard
Summer Shade, KY
Pop: 2,314
42133 standard
Fountain Run, KY
Pop: 1,370
42140 standard
Gamaliel, KY
Pop: 1,264
42151 standard
Hestand, KY
Pop: 275

Related Areas

Monroe County Mount Hermon, KY Kentucky

Frequently Asked Questions

What county is ZIP code 42157 in? ▼
ZIP code 42157 (Mount Hermon) is located in Monroe County, Kentucky. Monroe County contains multiple ZIP codes, see the full list at /counties/monroe-ky.
What is the population of ZIP code 42157? ▼
ZIP code 42157 in Mount Hermon, KY has a population of 437 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 42157? ▼
The median household income in ZIP 42157 is $101,250, which is 33% above the national average of $76,288.
What is the average home value in ZIP 42157? ▼
The median home value in ZIP 42157 is $175,000, which is 37% below the national average of $278,155.
What is the demographic makeup of ZIP 42157? ▼
The largest racial group in ZIP 42157 is White at 98.8%.
How many businesses are in ZIP code 42157? ▼
ZIP code 42157 has 4 business establishments employing approximately 32 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 42157? ▼
In ZIP code 42157, 56.3% of residents aged 25+ have a high school diploma or higher, and 10.4% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 42157? ▼
In ZIP code 42157, approximately 77.0% of occupied housing units are owner-occupied and 23.0% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 42157? ▼
The poverty rate in ZIP code 42157 is 28.6% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.