40020 ZIP Code — Fairfield, KY

Nelson County, Kentucky

ZIP code 40020 is located in Fairfield, Kentucky, within Nelson County. It covers approximately 0.48 square miles and serves a population of 204 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 502.

About ZIP code 40020

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1970s, giving the area an established character. Owner-occupancy is high at 91%, well above the national average.

Median household income is $85,458. The poverty rate of 3% is below the national average. 30% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is natural resources, construction, and trades, with manufacturing as the leading industry. An above-average commute of 37 minutes suggests many residents work outside the immediate area.

College attainment at 7% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include a notable veteran presence at 25% of civilians, above the national average of 7%; and disability rates above the national average at 25%.

Overall, ZIP code 40020 reflects a community defined by a trades-oriented workforce, a strong veteran community, high homeownership, and a significant Social Security-dependent population.

204

population

0.48

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

40020 ZIP code map

Cities in ZIP code 40020

Below are the cities the US Postal Service accepts for ZIP code 40020. Using any city not on this list may result in mail delivery delays.

City	Status
Fairfield	Acceptable

Demographics updated 05/2026

Population
Total population	204
Population density	425 / sq mi
State FIPS	21
County FIPS	179

Geography
Land area	0.48 sq mi
Water area	0.00 sq mi
Latitude	37.9368
Longitude	-85.3918
Timezone	Eastern (ET)
Area code	502

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	26.8%	39.7%	47.9%
$50k – $100k	67.4%	36.7%	30.3%
$100k – $200k	4.3%	20.5%	17.6%
Over $200k	1.4%	3.1%	4.2%

Demographics & statistics

204

Population

425

People per sq mi

59.8

Median age

$85,458

Median household income

$28,575

Per capita income

Median home value

$550

Median monthly rent

90.5%

Home ownership

2.5%

Poverty rate

0.0%

Unemployment

114

Housing units

7.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

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	7	3.4%
18 and over	197	96.6%
65 and over	60	29.4%
Median age	59.8 years

Race & ethnicity

White 98%

Two or more races 2%

Group	Count	%
White	200	98%
Two or more races	4	2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	26.8%	39.7%	47.9%
$50k – $100k	67.4%	36.7%	30.3%
$100k – $200k	4.3%	20.5%	17.6%
Over $200k	1.4%	3.1%	4.2%

$15k–$25k 6.3%

$25k–$35k 4.0%

$35k–$50k 14.3%

$50k–$75k 13.5%

$75k–$100k 57.9%

$100k–$150k 2.4%

$200k+ 1.6%

Range	% of households
$15k–$25k	6.3%
$25k–$35k	4.0%
$35k–$50k	14.3%
$50k–$75k	13.5%
$75k–$100k	57.9%
$100k–$150k	2.4%
$200k+	1.6%
Median income	$85,458

Housing

Home values

$50k–$100k 64.0%

$100k–$150k 3.5%

$150k–$200k 23.7%

$200k–$300k 4.4%

$300k–$500k 4.4%

Housing overview

Metric	Value
Median home value	$0
Median rent / month	$550
Owner occupied	90.5%
Renter occupied	9.5%
Vacant	0.0%
Single-family detached	39.7%
Large apartment buildings	0.0%
Mobile homes	56.3%
Median rooms	4.4
Avg household size (owned)	1.63

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	4.0%
1990–1999	0.0%
1980–1989	0.0%
1970–1979	61.1%
1960–1969	1.6%
1950–1959	21.4%
1940–1949	1.6%
1939 or earlier	10.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	57.9%
2 bedrooms	16.7%
3 bedrooms	11.9%
4 bedrooms	10.3%
5+ bedrooms	3.2%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	19.0%
2 vehicles	77.0%
3 or more	4.0%

Heating fuel

Fuel type	%
Utility gas	1.6%
Electricity	11.1%
Propane / LP gas	79.4%
Fuel oil	7.9%

Households & families

Household type	Count	%
Married-couple family	101	80.2%
Cohabiting couple	6	4.8%
Male householder, no spouse	10	7.9%
Female householder, no spouse	9	7.1%
Households with children under 18	4	3.2%
Households with seniors (65+)	36	28.6%
Average household size	1.62

Marital status

Status	Male	Female
Never married	15.4%	5.0%
Married	71.8%	83.2%
Separated	1.3%	0.0%
Widowed	9.0%	7.6%
Divorced	2.6%	4.2%

Education

Less than 9th grade 0.5%

Some HS, no diploma 0.0%

HS graduate 34.6%

Some college, no degree 6.9%

Associate's degree 50.5%

Bachelor's degree 3.2%

Graduate / professional 4.3%

Metric	%
HS diploma or higher	99.5%
Bachelor's or higher	7.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	4	30.8%
Kindergarten	0	0.0%
Elementary school	0	0.0%
High school	2	15.4%
College / grad school	7	53.8%

Employment

Industry of employment

Manufacturing 50.0%

Education & healthcare 19.7%

Finance & real estate 13.6%

Transportation & utilities 7.6%

Retail trade 3.0%

Arts, food & hospitality 3.0%

Construction 1.5%

Other services 1.5%

Occupation

Category	%
Management, business & arts	36.4%
Service	4.5%
Sales & office	1.5%
Natural resources & construction	40.9%
Production & transportation	16.7%

Employment type

Type	%
Private sector	98.5%
Government	0.0%
Self-employed	1.5%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	87.9%
Carpool	10.6%
Public transit	0.0%
Walk	0.0%
Work from home	1.5%
Other means	0.0%
Avg commute (minutes)	37.1

Poverty

All people 2.5%

Under 18 years 0.0%

18 and over 2.5%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	30.2%
Retirement income	18.3%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	4.8%

Health indicators

Condition	%
Obesity	35.7%
High blood pressure	45.8%
High cholesterol	40.5%
Diabetes	12.4%
Heart disease	9.1%
Stroke	3.7%
Asthma	10.1%
Arthritis	35.0%
Kidney disease	3.4%
Pulmonary disease	10.1%
Cancer	9.0%

Behavior / access	%
Smoking	17.8%
Binge drinking	13.5%
No physical activity	29.6%
Less than 7 hrs sleep	35.9%
Depression	22.4%
Fair or poor health	18.4%
Poor mental health	15.5%
Poor physical health	13.1%
No health insurance	10.3%
Visited doctor (checkup)	77.1%
Visited dentist	60.0%
Cholesterol screening	92.1%
Teeth loss	15.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	50	25.4%

Disability	%
Any disability	24.5%
Under 18	0.0%
18–64 years	28.5%
65 and over	18.3%

Health insurance coverage

Type	%
Private insurance	76.0%
Public insurance	50.5%
No insurance	4.9%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	199	97.5%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	204	100.0%
Born in same state	199	97.5%
Born in different state	191	93.6%
Foreign born	5	2.5%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Arab	21	10.3%
Italian	17	8.3%

Ancestry	Count	%
French	4	2%

Technology access

Metric	% of households
Computer access	61.8%
Internet access	90.5%

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

Frequently asked questions about ZIP code 40020

What city is ZIP code 40020 in?

ZIP code 40020 is primarily assigned to Fairfield, Kentucky.

What county is ZIP code 40020 in?

ZIP code 40020 falls within Nelson County, Kentucky.

Does ZIP code 40020 have an older population?

29% of residents in ZIP code 40020 are 65 or older, above the national average of ~17%.

How educated is the population of ZIP code 40020?

7% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Is ZIP code 40020 mostly owner-occupied?

91% of occupied units in ZIP code 40020 are owner-occupied, well above the national average.

Does ZIP code 40020 have a large veteran population?

25% of civilians in ZIP code 40020 are veterans, above the national average of ~7%.

What timezone is ZIP code 40020 in?

ZIP code 40020 observes the EST timezone.