42066 ZIP Code — Mayfield, KY

Graves County, Kentucky

ZIP code 42066 is located in Mayfield, Kentucky, within Graves County. It covers approximately 217.30 square miles and serves a population of 23,902 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 270/364.

About ZIP code 42066

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 $132,700. Owner-occupancy sits near the national average at 70%.

Median household income is $49,067. Poverty affects 23% of residents, above the national average. 39% 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 19% 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 42066 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, and a significant Social Security-dependent population.

23,902

population

217.30

sq mi land

Standard

ZIP type

Central (CT)

timezone

42066 ZIP code map

Cities in ZIP code 42066

Below are the cities the US Postal Service accepts for ZIP code 42066. Using any city not on this list may result in mail delivery delays.

City	Status
Mayfield	Preferred

Nearby ZIP codes

42088 Wingo (7.8 mi) 42051 Hickory (9.6 mi) 42079 Sedalia (10.1 mi) 42040 Farmington (10.8 mi) 42039 Fancy Farm (11.3 mi) 42085 Water Valley (12 mi) 42054 Kirksey (12.8 mi) 42027 Boaz (13.7 mi) 42041 Fulton (14.7 mi) 42069 Melber (14.9 mi) 42082 Symsonia (15.8 mi) 38226 Dukedom (16.8 mi)

Demographics updated 05/2026

Population
Total population	23,902
Population density	110 / sq mi
State FIPS	21
County FIPS	083

Geography
Land area	217.30 sq mi
Water area	2.40 sq mi
Latitude	36.7107
Longitude	-88.6499
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	56.5%	52.0%	47.9%
$50k – $100k	30.7%	32.6%	30.3%
$100k – $200k	10.7%	12.8%	17.6%
Over $200k	2.1%	2.7%	4.2%

Demographics & statistics

23,902

Population

110

People per sq mi

38.4

Median age

$49,067

Median household income

$27,673

Per capita income

$132,700

Median home value

$653

Median monthly rent

69.9%

Home ownership

22.7%

Poverty rate

3.8%

Unemployment

7,805

Housing units

18.8%

Bachelor's or higher

Age distribution

Male Female

962

Under 5

1,009

840

5–9

880

891

10–14

933

527

15–19

552

586

20–24

615

1,451

25–34

1,521

1,386

35–44

1,452

1,212

45–54

1,270

756

55–59

793

921

60–64

966

1,227

65–74

1,287

614

75–84

643

297

85+

311

← Male

Female →

Age summary

Group	Count	%
Under 18	6,097	25.5%
18 and over	17,805	74.5%
65 and over	4,379	18.3%
Median age	38.4 years

Race & ethnicity

White 78.4%

Hispanic or Latino 6.2%

Two or more races 6.2%

Black or African American 5.4%

Other race 3.1%

American Indian / Alaska Native 0.4%

Asian 0.3%

Group	Count	%
White	19,974	78.4%
Hispanic or Latino	1,589	6.2%
Two or more races	1,589	6.2%
Black or African American	1,384	5.4%
Other race	796	3.1%
American Indian / Alaska Native	93	0.4%
Asian	66	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	56.5%	52.0%	47.9%
$50k – $100k	30.7%	32.6%	30.3%
$100k – $200k	10.7%	12.8%	17.6%
Over $200k	2.1%	2.7%	4.2%

Under $10k 10.4%

$10k–$15k 6.8%

$15k–$25k 11.3%

$25k–$35k 9.1%

$35k–$50k 13.2%

$50k–$75k 19.1%

$75k–$100k 12.0%

$100k–$150k 10.0%

$150k–$200k 4.6%

$200k+ 3.4%

Range	% of households
Under $10k	10.4%
$10k–$15k	6.8%
$15k–$25k	11.3%
$25k–$35k	9.1%
$35k–$50k	13.2%
$50k–$75k	19.1%
$75k–$100k	12.0%
$100k–$150k	10.0%
$150k–$200k	4.6%
$200k+	3.4%
Median income	$49,067

Housing

Home values

Under $50k 11.1%

$50k–$100k 23.4%

$100k–$150k 22.7%

$150k–$200k 17.6%

$200k–$300k 15.4%

$300k–$500k 7.6%

$500k–$1M 1.3%

$1M+ 0.8%

Housing overview

Metric	Value
Median home value	$132,700
Median rent / month	$653
Owner occupied	69.9%
Renter occupied	30.1%
Vacant	12.2%
Single-family detached	78.4%
Large apartment buildings	1.7%
Mobile homes	9.3%
Median rooms	5.5
Avg household size (owned)	2.54

Year built

Era	%
2020 or later	0.3%
2010–2019	5.7%
2000–2009	8.2%
1990–1999	14.0%
1980–1989	14.4%
1970–1979	20.2%
1960–1969	11.6%
1950–1959	13.1%
1940–1949	6.3%
1939 or earlier	6.3%

Bedrooms

Size	% of units
No bedroom (studio)	1.3%
1 bedroom	6.1%
2 bedrooms	28.9%
3 bedrooms	48.9%
4 bedrooms	12.9%
5+ bedrooms	1.9%

Vehicles per household

Vehicles	% of households
No vehicle	7.4%
1 vehicle	27.9%
2 vehicles	43.8%
3 or more	20.8%

Heating fuel

Fuel type	%
Utility gas	50.9%
Electricity	32.4%
Propane / LP gas	14.2%
Fuel oil	0.1%
Wood	2.5%

Households & families

Household type	Count	%
Married-couple family	4,819	51.8%
Cohabiting couple	626	6.7%
Male householder, no spouse	1,433	15.4%
Female householder, no spouse	2,425	26.1%
Households with children under 18	2,805	30.2%
Households with seniors (65+)	3,041	32.7%
Average household size	2.51

Marital status

Status	Male	Female
Never married	23.8%	17.2%
Married	58.1%	52.2%
Separated	0.6%	2.0%
Widowed	3.7%	14.4%
Divorced	13.7%	14.2%

Education

Less than 9th grade 3.1%

Some HS, no diploma 7.3%

HS graduate 41.3%

Some college, no degree 17.9%

Associate's degree 11.4%

Bachelor's degree 10.8%

Graduate / professional 8.1%

Metric	%
HS diploma or higher	89.5%
Bachelor's or higher	18.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	425	8.9%
Kindergarten	210	4.4%
Elementary school	2,851	59.6%
High school	754	15.8%
College / grad school	540	11.3%

Employment

Industry of employment

Education & healthcare 21.9%

Manufacturing 15.9%

Retail trade 14.9%

Construction 11.7%

Professional & management 7.8%

Transportation & utilities 5.4%

Other services 4.4%

Public administration 3.6%

Finance & real estate 3.5%

Arts, food & hospitality 3.5%

Wholesale trade 2.9%

Agriculture & mining 2.5%

Information 2.1%

Occupation

Category	%
Management, business & arts	30.4%
Service	12.6%
Sales & office	20.6%
Natural resources & construction	14.9%
Production & transportation	21.5%

Employment type

Type	%
Private sector	82.2%
Government	12.6%
Self-employed	4.8%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	80.4%
Carpool	8.0%
Public transit	0.1%
Walk	1.4%
Work from home	8.4%
Other means	1.7%
Avg commute (minutes)	20.2

Poverty

All people 22.7%

Under 18 years 30.1%

18 and over 20.1%

Married-couple families 9.2%

Female-led households 53.1%

Income support

Source	% of households
Social Security	39.3%
Retirement income	25.4%
Supplemental Security	7.0%
Cash public assistance	1.7%
Food stamps / SNAP	16.0%

Health indicators

Condition	%
Obesity	39.2%
High blood pressure	45.5%
High cholesterol	37.8%
Diabetes	13.9%
Heart disease	9.0%
Stroke	4.4%
Asthma	11.6%
Arthritis	34.4%
Kidney disease	3.8%
Pulmonary disease	12.2%
Cancer	7.3%

Behavior / access	%
Smoking	24.7%
Binge drinking	14.2%
No physical activity	33.9%
Less than 7 hrs sleep	39.4%
Depression	24.7%
Fair or poor health	24.0%
Poor mental health	18.2%
Poor physical health	16.0%
No health insurance	12.3%
Visited doctor (checkup)	78.1%
Visited dentist	47.8%
Cholesterol screening	89.5%
Teeth loss	22.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,413	7.9%

Disability	%
Any disability	20.6%
Under 18	4.0%
18–64 years	23.1%
65 and over	36.8%

Health insurance coverage

Type	%
Private insurance	55.8%
Public insurance	52.4%
No insurance	6.3%
Uninsured under 19	5.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	21,931	91.8%
Spanish	450	2.1%
Other Indo-European	386	1.8%
Asian & Pacific Islander	46	0.2%
Other languages	18	0.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	23,237	97.2%
Born in same state	23,141	96.8%
Born in different state	16,228	67.9%
Foreign born	96	0.4%
Naturalized citizen	665	2.8%
Not a US citizen	361	54.3%

Ancestry

Ancestry	Count	%
French	5,463	22.9%
Arab	2,945	12.3%
Italian	1,537	6.4%
English	111	0.5%

Ancestry	Count	%
Polish	91	0.4%
Irish	23	0.1%
German	17	0.1%
Norwegian	3	0%

Technology access

Metric	% of households
Computer access	38.9%
Internet access	89.3%

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

Frequently asked questions about ZIP code 42066

What city is ZIP code 42066 in?

ZIP code 42066 is primarily assigned to Mayfield, Kentucky.

What county is ZIP code 42066 in?

ZIP code 42066 falls within Graves County, Kentucky.

What is the poverty rate in ZIP code 42066?

23% of residents in ZIP code 42066 live below the poverty line, above the national average.

Does ZIP code 42066 have a large retiree population?

39% of households in ZIP code 42066 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 42066?

The median home value in ZIP code 42066 is $132,700.

What is the population of ZIP code 42066?

ZIP code 42066 has an estimated population of 23,902 residents, with a density of 110 people per square mile.

What timezone is ZIP code 42066 in?

ZIP code 42066 observes the CST timezone.