Columbia ZIP Code List — Adair County, KY

There is one unique ZIP code in Columbia, Kentucky and it is 42728. Area code: 270/364.

ZIP codes

320.93

sq mi land

5.77

sq mi water

270/364

area code

Columbia, KY ZIP code map

About Columbia, KY

Columbia is a charming city located in Adair County, Kentucky. Known for its friendly atmosphere and rich history, it serves as a center for community activities and local commerce. As a small town, it offers a unique blend of rural charm and southern hospitality.

Location & geography

Columbia is situated in south-central Kentucky and is part of the picturesque region characterized by rolling hills and lush greenery. Nearby cities include Campbellsville, approximately 22 miles to the northeast, and Russell Springs, about 18 miles to the northwest. The total land area of Columbia spans 320.93 square miles, with a water area of 5.77 square miles, providing both land and water recreational opportunities.

Community & economy

The community in Columbia is closely knit, with residents frequently participating in local events and gatherings that foster a sense of belonging. The economy is supported by agriculture, small businesses, and local services, contributing to a vibrant daily life. Community pride is evident in the various festivals and activities held throughout the year, highlighting the city’s rich cultural heritage.

Transportation

Columbia is accessible via several highways, with the major routes being Kentucky Route 55 and US Route 68, facilitating travel to surrounding regions. The nearest named airport is in Campbellsville, providing residents access to regional air travel options. Public transit options are limited, emphasizing the importance of personal vehicles for local transportation.

History

Founded in the early 19th century, Columbia has developed a rich history tied to agriculture and local craftsmanship. The establishment of key industries, such as agriculture and small manufacturing, helped shape the economic landscape of the area. Notable events include the founding of the city in 1800 and its role as a center for local governance and cultural events.

Did you know?

A surprising fact about Columbia is its designation as the county seat of Adair County, making it a central hub for local government and activities. Additionally, the city is known for hosting the annual Adair County Fair, which attracts visitors from surrounding areas for games, rides, and local exhibitions.

ZIP codes for Columbia, KY (1)

ZIP code	City	County	Map
42728	Columbia	Adair	View map

Demographics & statistics

15,789

Population

41.2

Median age

$49,112

Median household income

$26,462

Per capita income

$128,800

Median home value

$718

Median monthly rent

75.1%

Home ownership

18.0%

Poverty rate

6.5%

Unemployment

5,956

Housing units

19.7%

Bachelor's or higher

Age distribution

Male Female

349

Under 5

347

403

5–9

400

415

10–14

412

641

15–19

636

716

20–24

711

876

25–34

870

828

35–44

822

981

45–54

973

558

55–59

553

579

60–64

574

944

65–74

937

466

75–84

462

169

85+

167

← Male

Female →

Age summary

Group	Count	%
Under 18	2,892	18.3%
18 and over	12,897	81.7%
65 and over	3,145	19.9%
Median age	41.2 years

Race & ethnicity

White 90%

Two or more races 4.7%

Hispanic or Latino 2.5%

Black or African American 1.8%

Asian 0.5%

Other race 0.4%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	14,576	90%
Two or more races	765	4.7%
Hispanic or Latino	401	2.5%
Black or African American	288	1.8%
Asian	73	0.5%
Other race	61	0.4%
Native Hawaiian / Pacific Islander	24	0.1%

Household income

Under $10k 5.4%

$10k–$15k 9.8%

$15k–$25k 11.8%

$25k–$35k 8.5%

$35k–$50k 15.6%

$50k–$75k 19.3%

$75k–$100k 12.0%

$100k–$150k 13.0%

$150k–$200k 2.5%

$200k+ 1.9%

Range	% of households
Under $10k	5.4%
$10k–$15k	9.8%
$15k–$25k	11.8%
$25k–$35k	8.5%
$35k–$50k	15.6%
$50k–$75k	19.3%
$75k–$100k	12.0%
$100k–$150k	13.0%
$150k–$200k	2.5%
$200k+	1.9%
Median income	$49,112

Housing

Home values

Under $50k 10.0%

$50k–$100k 26.5%

$100k–$150k 19.8%

$150k–$200k 15.4%

$200k–$300k 16.4%

$300k–$500k 11.0%

$500k–$1M 0.8%

Housing overview

Metric	Value
Median home value	$128,800
Median rent / month	$718
Owner occupied	75.1%
Renter occupied	24.9%
Vacant	21.0%
Single-family detached	71.1%
Large apartment buildings	1.0%
Mobile homes	19.4%
Median rooms	5.4
Avg household size (owned)	2.49

Year built

Era	%
2020 or later	0.5%
2010–2019	7.2%
2000–2009	17.2%
1990–1999	14.8%
1980–1989	12.1%
1970–1979	17.6%
1960–1969	15.7%
1950–1959	5.5%
1940–1949	2.9%
1939 or earlier	6.4%

Bedrooms

Size	% of units
No bedroom (studio)	1.8%
1 bedroom	6.1%
2 bedrooms	24.3%
3 bedrooms	53.3%
4 bedrooms	12.4%
5+ bedrooms	2.2%

Vehicles per household

Vehicles	% of households
No vehicle	6.1%
1 vehicle	24.3%
2 vehicles	41.8%
3 or more	27.8%

Heating fuel

Fuel type	%
Utility gas	9.6%
Electricity	76.9%
Propane / LP gas	6.0%
Fuel oil	0.8%
Wood	6.1%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	3,027	51.7%
Cohabiting couple	237	4.0%
Male householder, no spouse	1,067	18.2%
Female householder, no spouse	1,525	26.0%
Households with children under 18	1,646	28.1%
Households with seniors (65+)	2,162	36.9%
Average household size	2.48

Marital status

Status	Male	Female
Never married	30.5%	30.0%
Married	50.7%	46.6%
Separated	1.4%	1.1%
Widowed	4.2%	8.7%
Divorced	13.2%	13.5%

Education

Less than 9th grade 6.9%

Some HS, no diploma 7.9%

HS graduate 38.9%

Some college, no degree 16.1%

Associate's degree 10.5%

Bachelor's degree 9.4%

Graduate / professional 10.3%

Metric	%
HS diploma or higher	85.1%
Bachelor's or higher	19.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	114	2.8%
Kindergarten	154	3.8%
Elementary school	1,345	33.0%
High school	643	15.8%
College / grad school	1,821	44.7%

Employment

Industry of employment

Education & healthcare 27.5%

Retail trade 17.1%

Manufacturing 16.3%

Construction 7.0%

Transportation & utilities 7.0%

Professional & management 6.1%

Arts, food & hospitality 5.4%

Public administration 5.1%

Finance & real estate 2.6%

Other services 2.6%

Agriculture & mining 2.0%

Wholesale trade 1.0%

Information 0.3%

Occupation

Category	%
Management, business & arts	32.3%
Service	14.6%
Sales & office	19.4%
Natural resources & construction	10.1%
Production & transportation	23.6%

Employment type

Type	%
Private sector	76.5%
Government	17.3%
Self-employed	6.1%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	76.8%
Carpool	9.8%
Public transit	0.0%
Walk	2.0%
Other means	0.7%
Avg commute (minutes)	24.9

Poverty

All people 18.0%

Under 18 years 24.5%

18 and over 16.4%

Married-couple families 8.5%

Female-led households 47.2%

Income support

Source	% of households
Social Security	44.2%
Retirement income	27.1%
Supplemental Security	10.7%
Cash public assistance	1.2%
Food stamps / SNAP	15.0%

Health indicators

Condition	%
High blood pressure	42.3%
High cholesterol	39.3%
Heart disease	8.4%
Stroke	4.0%
Asthma	11.9%
Arthritis	32.7%
Kidney disease	3.5%
Pulmonary disease	12.1%
Cancer	6.7%

Behavior / access	%
Binge drinking	15.2%
No physical activity	33.9%
Less than 7 hrs sleep	38.1%
Fair or poor health	23.2%
Poor mental health	19.4%
Poor physical health	15.7%
No health insurance	11.7%
Visited doctor (checkup)	76.5%
Visited dentist	50.2%
Cholesterol screening	87.9%
Teeth loss	22.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	832	6.5%

Disability	%
Any disability	22.4%
Under 18	5.0%
18–64 years	19.0%
65 and over	49.5%

Health insurance coverage

Type	%
Private insurance	56.0%
Public insurance	51.8%
Uninsured under 19	2.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	15,093	95.6%
Spanish	93	0.6%
Other Indo-European	19	0.1%
Asian & Pacific Islander	51	0.3%
Other languages	5	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	15,244	96.5%
Born in same state	15,227	96.4%
Born in different state	11,593	73.4%
Foreign born	17	0.1%
Naturalized citizen	545	3.5%
Not a US citizen	117	21.5%

Ancestry

Ancestry	Count	%
French	2,244	14.2%
Arab	1,891	12%
Italian	1,286	8.1%
English	66	0.4%

Ancestry	Count	%
Norwegian	32	0.2%
Polish	31	0.2%
German	27	0.2%
Dutch	16	0.1%

Technology access

Metric	% of households
Computer access	37.1%
Internet access	89.2%

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

Frequently asked questions

What is the ZIP code for Columbia, KY?

Columbia, KY has one ZIP code: 42728.

What is the main ZIP code for Columbia, KY?

The primary ZIP code for Columbia, KY is 42728. The city uses area code 270 or 364 for phone service.

What county is Columbia, KY in?

Columbia is located in Adair County, Kentucky.

How many ZIP codes are in Columbia, KY?

Columbia, KY has 1 ZIP code.

What ZIP code should I use when mailing a package to a business in downtown Columbia, Kentucky?

Downtown Columbia, Kentucky is located in ZIP code 42728, which serves the central business district and historic downtown area of this Adair County city.

If I'm sending mail to Columbia High School in Columbia, Kentucky, which ZIP code should I use?

Columbia High School and other educational institutions in Columbia, Kentucky are served by ZIP code 42728, the sole ZIP code for this city.